Features of the Ultimate Direction Race Vest 5.0 Upgraded lightweight hook and loop sternum adjustability Front storage for hydration, fuel and valuables Front stretch mesh pockets Are phone compatible Comfort Cinch 2.0-more minimal, lightweight, and adjustable Shoulder strap shaping to promote weight distribution and comfortable Fit Lightweight 4-way stretch with rip stop pattern for added durability Large rear compartment to accommodate up to a 2.0L reservoir Fabric Details Flex Mono Mesh, Micro Mono Mesh, 30D Nylon 66 sil/pu, 4-way stretch Nylon/elastane with dissolved thread for increased breathability