Hydration Pack,Hydration Backpack with 2L Hydration Bladder Lightweight Running Water Backpack for Women Men

FLEXIBLE SIZING: Fully adjustable shoulder/chest straps make sure it doesn't bounce when you move will fit chest sizes from teenagers/kids with 27" up to adults (men and women) with 50" chest size,This hydration backpack for hydration will keep your littles hydrated and happy,fits younger explorers too. COMPACT& LIGHTWEIGHT : This Hydration packs are designed specifically for road cycling /running/ Hiking ,So that's Compact and low-profile so they feel light and stable on your back and won’t create a ton of wind resistance ,keep your body functioning at peak performance whether you're training for a marathon or cycling. COMFORTABLE & FUNCTIONAL backpack: Hydration backpack has a bike helmet organizer pocket, built-in safety whistle, extra storage pockets, and reflective accents for visibility in low-light environments. a Breathable mesh back panel for a cool & comfortable ride. UPGRADE LEAKPROOF:Our water reservoir adopts military-grade double sealing technol