Ultimate Direction Jurek Endure Twin FlexForm Bottles allow for water in one and sports mix in the other Bottle holsters tighten to any phone or camera. Wrap-around Mono Belt with Velcro adjustment Waist Size: SM/MD: 26 - 33 in. / 66 - 84 cm - MD/LG: 31 - 43 in. / 79 - 109 cm Total Volume: 72 in3 / 1.2L - Unsecured Volume: 41 in3 / .7L - Weight: 3.89 oz. (7.81 oz. with bottles) / 111 g (223 g with bottles) - Height: 6.7 in. / 17 cm - Width: 13 in. / 33 cm - Depth: 2 in. / 5 cm. Materials: MonoRip Mesh: Breathable, non-stretch, and hydrophobic - this lightweight monofilament mesh is ideal for bounce-free load carrying - 60D Silnylon: Greater strength and abrasion resistance with low weight - 4-way PowerStretch Woven: A spandex-enhanced stretch woven for secure carry and great looks