DMM
Up and Under in Cardiff, UK, offers an extensive range of DMM products, catering to climbing, mountaineering, caving and professional work needs, as well as providing kits for outdoor activity centers and youth groups. DMM, originally founded as Moorhouse Engineering in 1981, transitioned to larger premises in Llanberis in 1986 and marked 40 years of manufacturing in 2021. The company, which started with just four employees, now boasts a workforce of over 200. Central to DMM's mission has always been to produce top-quality equipment at the best price, a commitment that has driven continuous innovation and growth in both recreational and industrial markets.
DMM’s success is rooted in its dedication to innovation, consistently investing in factory infrastructure, advanced machinery and product development to remain a leader in the industry. This approach has positioned DMM as a global frontrunner, backed by a skilled and loyal workforce. Recent expansions, including a purpose-built assembly area and CNC machining section, exemplify their commitment to efficiency and competitiveness. As the only UK manufacturer of climbing hardware, DMM continues to strengthen its unique market position, ensuring a robust future for both its recreational and industrial product lines.
DMM
Vertex Sliding Rest
The DMM Vertex Sliding Rest is a replacement hand rest for the Vertex axe. It can be slackened with a lever and moved out of the way up the shaft when using the axe for shaft plunging in steep snow. The Vertex axes already come supplied with these but it can also be used with to DMM Flux and the DMM Spire.
DMM
Freedom Single Leash
The DMM Freedom Single Leash provides you with the freedom and versatility of leashless climbing, whilst still preventing your axes from falling if you do drop them. While leashless climbing is incredibly liberating, dropping your axe halfway up a route is not an option. This item is purely intended to prevent dropping your tools. At no point should you rely on it to provide security.
DMM
Freedom Single XSRE Leash
The DMM Freedom Single XSRE Leash provides you with the freedom and versatility of leashless climbing, whilst still preventing your axes from falling if you do drop them. While leashless climbing is incredibly liberating, dropping your axe halfway up a route is not an option. This item is purely intended to prevent dropping your tools. At no point should you rely on it to provide security.
DMM
Freedom Revo Leash
The DMM Freedom Revo Leash provides you with the freedom and versatility of leashless climbing, whilst still preventing your axes from falling if you do drop them. While leashless climbing is incredibly liberating, dropping your axe halfway up a route is not an option. The double Revo leash has a clip in point half way up. If you fall off but your axes hold, this allows you to clip a sling into the leash and pull back to your axes. A feature you hopefully won’t have to use, but will be glad of if you do.
DMM
Freedom Revo XSRE Leash
The DMM Freedom Revo Leash provides you with the freedom and versatility of leashless climbing, whilst still preventing your axes from falling if you do drop them. While leashless climbing is incredibly liberating, dropping your axe halfway up a route is not an option. The double Revo leash has a clip in point half way up. If you fall off but your axes hold, this allows you to clip a sling into the leash and pull back to your axes. A feature you hopefully won’t have to use, but will be glad of if you do.
DMM
Phantom - 6 Pack
The DMM Phantom is a highly focussed lightweight climbing carabiner. Its I-Beam construction improves the strength to weight ratio, a minimised gate notch reduces snagging, and sound fundamental design encourages correct loading. The Phantom can be used on lightweight quickdraws, to rack gear, or to hold essentials like nut keys.
DMM
Vault
The DMM Vault ensures safe, strong and secure racking for ice screws and tools. Traditionally made of plastic, this material is much more rigid and secure, making the DMM Vault a much more durable option. Featuring a locking option minimises the chances of accidental gate opening, keeping your equipment safely in place and not tumbling down the cliff face!
DMM
Revolver Rig
The DMM Revolver Rig is a connector with an integrated pulley sheave. Featuring a high efficiency roller bearing sheave(s), a threaded removable captive bar and a full strength textile friendly basket.
DMM
Revolver Rig
The DMM Revolver Rig is a connector with an integrated pulley sheave. Featuring a high efficiency roller bearing sheave(s), a threaded removable captive bar and a full strength textile friendly basket.
DMM
Brass Offset
The DMM Brass Offsets are a crucial tool for protecting small flared cracks, they often fit perfectly into spaces nothing else will fit into. The brass used for the head of the nut is soft enough to bite into placements, but hard enough to resist deforming and pulling through. Wires are soldered directly into the nut head, allowing a thicker wire to be used and increasing overall strength. The colour coded swage gives easy size selection and allows the Brass Offset to self equalise when loaded, making the most of marginal placements.
DMM
Apex
The DMM Apex is an ice tool with a new and modern design that make it perfect for ice and winter climbing in anywhere from Norway to Scotland. The shaft features an extreme curve, which provides good hand clearance in ice bulges and allows for a technical pick angle. The grip is insulated and ergonomically shaped for maximum comfort and control. All of its components are T-rated and subsequently suitable for belay anchoring.
DMM
Alpha Steel Quickdraw
The DMM Alpha Steel Quickdraw is the best handling gym draw on the market, forging the ergonomic Alpha shape in steel. The ergonomic Alpha shape combines with a curved gate to make clipping easy. Once the rope is clipped, deep rope baskets help ensure the carabiner is correctly oriented.
DMM
Alpha Sport Quickdraw - 6 Pack
The DMM Alpha Sport Quickdraws (6 Pack) are highly tough and durable quickdraws that are comfortable and easy to use, so you'll never want to stop climbing! With a solid gate carabiner for the bolt end, and a bent gate carabiner for the rope end, the Alpha delivers unparalleled handling with super easy clipping.
DMM
Alpha Sport Quickdraw
The DMM Alpha Sport Quickdraw uses a clip friendly biner that DMM call the Alpha Clip. It has a easy to handle, grippy shape, generous 8.5mm rope radius. The gate itself has a flared out barrel shape and DMM declare this to be the most clip friendly they have ever made. The variable width tape (26mm and it's widest) is easy to grab and comfortable when pulling back up the route after a fall.
DMM
Flight
The DMM Flight is climbing pack with a suitcase style opening and 45 litres of capacity that will comfortably fit you rope, helmet and other belongings. The Flight backpack has been designed to fit most airlines carry-on restrictions and features Airmesh back, hip belt and shoulder straps for an extra comfortable carry. There is space in one half of the bag for up to 80m of rope and the other half is the perfect size for your harness, rockshoes and chalk bag. There is then additional external storage for your helmet and drinks bottle.
DMM
Edge Boulder Chalk Bag
The DMM Edge Chalk Bucket is a must for bouldering walls, boulder fields and social dipping. It has a zipped pocket, a Velcro pocket and 2 brush slots so you can securely store and easily find essentials like; tape, sandpaper and superglue. When in transit the large carry handles and double drawcord closure keeps the chalk where it should be, whilst the stable base stops you loosing it once you unleash the bag.
DMM
Dynatec 8mm Open Sling
The DMM Dynatec 8mm Open Slings are great keeping down the weight of your rack and are just as strong as their thicker variants. These skinny slings are particularly useful for narrow thread protection and they feature a plastic binding over the stitching for abrasion resistance. They are rated the same as the 11mm version (22kN).
DMM
Dynatec 11mm Quickdraw Tape
The DMM Dynatec 11mm Quickdraw Tapes are individual quickdraw extenders that can be used in between two karabiners to make a quickdraw. One end of the tape has a sewn-in 'tadpole' retainer of rubber which a karabiner can thread through and then clip onto the rope, making the karabiner less likely to spin or become cross-loaded by the rope in the event of a fall. The longer lengths are useful for trad climbing, particularly single rope use as there is less chance of rope drag and movement lifting out placed protection.
DMM
Dynatec 11mm Open Sling
The DMM Dynatec 11mm Open Slings can be used for belays, running belays and to form a quickdraw using 2 karabiners, they are made with Dyneema® and rated at 22kN.
DMM
Dragonfly Cam
The long awaited micro cam from DMM is here! The Dragonfly Microcam device is an awesome piece of trad climbing rock protection that is lightweight, hardwearing and superbly flexible when placed. The narrow head and flexible stem make them the superior camming unit for limestone pockets but equally comfortable in granite and gritstone splitters. The size 1 Dragonfly is DMM's smallest certified climbing cam. The six cams in the range cover placements from 7.8mm – 28.3mm.
DMM
Dragon Cam
The DMM Dragon Cams feature a single stem, dual axle design that provides 360° flexibility and a substantial expansion range that increases performance in sub-optimal placements, therefor helping you get the right piece first time. Their striking TripleGrip cam lobes feature an increased contact area with a raw aluminium finish and additional bite points. These features work together to increase friction between the cam lobe and the rock it's placed in, increasing holding power and reduces walking.
DMM
Classic Rope Bag
The DMM Classic Rope Bag has the capacity to transport up to 80m of rope and accessories efficiently and comfortably, making it ideal for both the wall and crag. It has an internal tarp that is secured to the bag's interior with a Velcro attachment - this will keep your rope out of the mud and anything sharp when outdoors. It also features a handy zipped lid pocket for storing small essentials like your purse, wallet, phone or keys.
DMM
Puma 2
The Puma 2 is DMM's top of the range female-specific harness. This updated version has taken all of it's predecessors attributes and made them even better. The free-floating waist belt guarantees a good fit, whether you're at the top or bottom end of the size range (or if you need to add a few layers in the winter), you can be assured that your belay loop will always be central and the 7 gear loops (5 on XS and Small) are easily in reach.
DMM
Pivot
The DMM Pivot belay device delivers confident belaying and effective stopping power whether used in guide mode, or belaying from the waist. Guide plates have traditionally been difficult to operate when lowering seconds. The Pivot's shackle reduces the force needed to initiate lowering, increasing control of the speed at which you lower your second.
DMM
Phantom Quickdraw - 6 Pack
The DMM Phantom Quickdraws (6 pack) feature an I-Beam construction that brings each Phantom carabiner's weight down to just 28 grams. Low weight doesn't mean no frills: the Phantom has a reduced gate notch to combat snagging, and more metal in contact areas for reduced wear on equipment.
DMM
Peenut
The DMM Peenut are small offset nuts (available individually or as a 1 to 5 set) are specifically designed for flared cracks and shallow placements, but seem to fit everywhere. Found to be particularly effective on Cornish Granite. Now colour-coded for quick identification.
DMM
Offset Nut
The DMM Offset Nuts are made with anodised alloy and are available individually as a size 7-11 set. These are bigger and more rounded than their brass brothers. Based on the famed HB design this anodised alloy offset set gets you placement where no other nut can because of their complex offset shape. Especially useful on granite cracks and colour coded for easy selection off the harness.
DMM
Nylon Variwidth QD Sling With Logo
This variable width nylon dogbone is great for making up sport quickdraws, or replacing them at activity/climbing centres. The sling tapers to 16mm at each end to hold the carabiners in the correct orientation, and has a rubber keeper to keep the rope end biner from cross loading. The middle of the sling is a comfortable 26mm in case you need to dog up a route. We sell 12cm, and 18cm length options incase you need an extended quickdraw.
DMM
Nylon 26mm Open Sling
The DMM Nylon 26mm Open Slings are very strong and durable nylon slings ideal for centre use. These are the strongest tape in DMM's range, rated at a massive 32kN. When strength and longevity are paramount these are the ones.
DMM
Nylon 16mm Open Sling
The DMM Nylon 16mm Open Slings are wider and heavier than the Dynatec slings and are a great option for beginners or use in outdoor activity centres. Although they are rated no higher than dyneema slings, there is more material involved and so they offer a greater safety margin when dragged over a sharp edge. The extra width may give beginners more confidence too.
DMM
Nutbuster
The DMM Nutbuster is an invaluable tool for retrieving jammed gear. It features a rubber handle that gives a firm grip that lets you bash the Nutbuster to remove stuck protection. It can also be removed to reveal a 17mm spanner that lets you tighten loose bolts. The Nutbuster is laser cut from stainless steel for strength and corrosion resistance, with holes cut into it to minimise weight. A versatile and functional tool that every trad climber should carry.
DMM
Micro Wallnut
The DMM Micro Wallnuts are for use in extremely narrow cracks where a normal Wallnut size 1 is too big. The large contact surface area of the Micro Wallnuts allows them to spread loads over a greater area of rock, decreasing the chance of the rock failing. They feature straight sides to give alternative placement options to our other alloy micro-protection. Used in conjunction with Peenuts they provide comprehensive protection for small cracks in friable rock.