Instinct
Up and Under in Cardiff stocks Instinct running hydration vests and accessories, designed to provide comfort and performance on the toughest trails. Born in the French Alps and tested worldwide, Instinct gear focuses on functionality, ergonomics and freedom of movement. Each product has been developed with input from athletes and runners, ensuring a second-skin fit and durability for any adventure.
Instinct embodies a deep connection with nature, promoting seamless movement and enhanced comfort on the trail. Committed to sustainability, the brand prioritizes environmentally friendly production methods while crafting innovative gear.
Instinct
Race Cup
The Instinct Race Cup is a soft, foldable, and reusable drinking cup, perfect for trail races, ultra runs, and outdoor adventures. A race-day essential, it replaces disposable cups to reduce plastic waste. Made from durable TPU, it’s BPA, PVC, and phthalate-free for safe hydration. The lightweight, collapsible design fits easily into a pocket or vest, while the carabiner-compatible handle offers easy access. Suitable for hot and cold drinks (up to 60°C/140°F), it’s the sustainable choice for endurance athletes.
Instinct
Endurance
The Instinct Endurance Cap delivers the ultimate blend of comfort and performance, making it your go-to for any adventure. Soft, ultra-light, and built for endurance, this cap features breathable micro-mesh fabric to keep you cool, plus a flexible, foldable design that’s easy to pack and take anywhere. With a stylish sublimated finish on both the top and underside and an adjustable elastic band with a secure clip clasp, it offers a premium look and fit that stays comfortable all day long.
Instinct
Race Number Belt
Th3 Instinct Race Number Belt is a race-day essential, the Race Number Belt keeps your race number secure and visible, so you can focus on performing your best. Equipped with three spring-loaded toggles, it firmly holds your race number in place, even during intense movement. With reflective logos for added visibility and an adjustable, one-size-fits-all design, this belt combines practicality with comfort. The sturdy nylon buckle clip ensures a quick and reliable fit every time.
Instinct
Hydracell 600
The Instinct Hydracell 600 is a compressible softflask bottle with a circular bottom, making it more resistant to abrasion and punctures. It will slide perfectly into the pockets of your Instinct pack for on-the-go hydration.
Instinct
Alpi 40L
The Instinct Alpi 40L is the pinnacle of versatility for endurance alpine athletes. It offers legendary stability, function and ergonomics suitable for a range of activities from trail running and hiking, to ski touring and mountaineering. The Alpi 40L is a premium quality pack that sits high on the back and incorporates intuitive storage and technical solutions that allow immediate access to your most important items and essentials. Compressed down, it fits like a low-profile trail pack. Fully loaded, it allows for multi-day adventures.
Instinct
XX 20-24L
The Instinct XX 20-24L marks a new beginning for those seeking the ideal solution for multi-day trail races, ultra-distance events or self-sufficient adventures. It's evolutive in volume and offers intelligent, segmented storage that provides easy access to your essentials in the most critical conditions. Extreme function allows customization in how gear/clothing/food/hydration can be carried.
Instinct
X8 - 18L
The Instinct X8 - 18L offers unrivalled function and versatility for ultra-distance racing, fast light hikes and multi season adventures. It features top & bottom horizontal mesh stretch pockets, a 2.5L water bladder pocket and has space to store a camping mat or tent underneath, as well as a variety of easy-access pockets to you can easily reach your essentials on-the-go.
Instinct
Eklipse 12L
The Instinct Eklipse 12L is an intuitive trail running vest that's highly functional, compact and weatherproof, the perfect solution for ultra distance racing or any longer runs. Perfect for any race up to +180km, the Eklipse is light, comfortable and expandable in volume proving itself as an extremely versatile pack. Pockets have been optimally positioned so you have easy access to all your essentials on the trail and lightweight & breathable 3D honeycomb mesh ensures ventilation and sweat dissipation without sacrificing strength or reliability.
Instinct
X - 10L
The Instinct X - 10L is the ultimate ultra distance and training vest. The X offers aspiring trail runners & elites the most intelligent storage, function and versatility available. Discover phenomenal stability & comfort in any situation, the X achieves increased storage capacity while remaining ultra-compact, breathable, and with minimal body contact.
Instinct
Evolution 7L
The Instinct Evolution 7L is an intuitive trail running hydration vest that offers extreme versatility and minimal body contact. Its volume is adjustable to suit the requirements of your race and its high-sitting back placement allows for immediate & easy access to your hydration, poles and other essentials. The Evolution features adjustable front sternum straps and Instinct's unique side elastic lacing system, allowing for a custom fit to almost any body type.
Instinct
Ambition 4.5L
The Instinct Ambition 4.5L is a minimalist, refined and performance orientated running hydration vest that will help you go further. This compact pack offers clever storage solutions, extreme functionality and a fit that's so natural you forget you're wearing it. It features adjustable sternum straps and Instinct's unique elastic side lacing system, allowing for a custom fit to almost any body type. Discover stability, liberty of movement, immediate access to storage and unconstrained breathing with the Instinct Ambition 4.5L.
Instinct
PX 3.1L
The Instinct PX 3.1L is a minimalist, lightweight and non-compressive running pack for carrying your essentials, a great option for road & trail running or even your next marathon. It features adjustable front sternum straps and Instinct's unique elastic side lacing system, which allows for a custom fit to almost any body type. Discover stability, absolute freedom of movement, immediate access to storage and unconstrained breathing with the Instinct PX 3.1L.
Instinct
Ergo Bottle Pocket
The Instinct Ergo Bottle Pocket allows for extra storage of water, food and smaller essentials, great for use on multi-day stage races and adventures. It features small callipers that allow for easy and secure attachment to various points on your pack. Quick release buckles make it possible to remove the pocket if needed.
Instinct
Trail Running Reflex Belt
The Instinct Trail Running Reflex Belt provides you with hands-free storage for all your essentials without the need to wear an uncomfortable backpack or vest. The belt features six pockets with integrated race bib holders and reflective loops for arms-free enjoyment on the trails.