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The BUILT TO SEND U1 pack is an ultra-minimal pack for those who have their gear really dialed in. Built for fast-and-light day missions in all environments, this pack also works well as a cragging day pack or for weekend hikes. With its additional internal pockets, it furthers its uses from the great outdoors to the urban jungle as you navigate the day-to-day missions city life throws at you. Making the U1 the ultimate everyday pack for every occasion.



The unique BUILT TO SEND mono-shell design makes our packs almost indestructible. The main body is made from a single piece of tough climate-neutral composite VX21 X-Pac fabric leading to an almost seamless design. The only way of breaking a BUILT TO SEND pack is to tear though one of the toughest materials on the planet. The fabric is 100% waterproof, making our packs extremely weather resistant in rain and snow.


Our contoured shoulder straps and back panel are engineered from a proprietary foam (we developed our own 10 mm thick physically cross-linked polyethylene foam) based on a type used in fighter pilot seats. The properties of this foam give it excellent load spreading capability for the shoulder straps, and make the back panel forgiving of poor packing when fully loaded. Shoulder and hip pads are low-profile, for harness compatibility during rock and ice climbing.


Our seam allowances are almost twice the industry standard, and we triple stitch structural seams using V92 bonded polyester thread, exceeding the military specification for safety-critical equipment. Load-rated webbing is bar-tacked for extreme strength.


BUILT TO SEND packs represent an extreme design-optimization point, stripped down and refined to achieve the epitome of bombproof-yet-ultralight. Our packs are hand build to exacting engineering standards with each pack individually quality checked in Great Britain before reaching the end user. Your BUILT TO SEND pack has been built without any compromise on quality. It’s the finest engineered and strongest pack on planet earth.



£179.00 Regular Price
£159.00Sale Price

    Stripped (white): 0.620 kg | 1.36 lb

    For black VX21 add 0.025 kg


    Folded: 19 L

    Overload mode: 22 L


    Height Folded: 500 mm | 19.6 in.

    Height in overload mode: 550 mm | 21.7 in.

    Circumference bottom: 700 mm | 27.5 in.

    Circumference top: 780 mm | 30.7 in.



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