Outdoor Products Interval 8.0 Waist Pack, 1.1-Liter Minimalist waist pack with single water bottle and zippered accessory pocket for carrying essentials like keys, credit card, and energy gels Constructed of durable polyester and invisible ripstop fabric; includes 600 milliliter squeeze bottle contoured to fit comfortably around the waist; foam mesh waist for breathability Measures 6.6 x 16.6 x 2.3 inches and weighs 0.45 pounds; backed by the Outdoor Products Plain + Simple Lifetime Guarantee