100% RECYCLED 420D Polyester Ripstop / HydroShield. Lightweight and breathable Air Contour carry system. Stretch water bottle side pockets. Zipped top pocket for secure storage. A real all-rounder, the Tensor 15 is a lightweight, hydration compatible day-pack that is the perfect companion for hitting the trails. Featuring Rab's AirContour back system, it provides a close fit, excellent ventilation and optimum comfort for those long days in the great outdoors. Designed to store the bare essentials and is equipped with a zipped top pocket for secure storage, internal zipped security pocket for valuable items and removable waist-belt.