Platypus Big Zip EVO 2.0L

✅【VEST ONLY】This version is hydration vest only. Not include water bladder or water bottle. The hydration pack is made of waterproof nylon and polyester mesh. Lightweight, comfortable and durable
✅【BREATHABLE & ADJUSTABLE】Soft and thin mesh padding of hydration vest for optimal comfort and absorb sweat efficiently. The flexible adjustable straps help running vest hug your body nicely
✅【LIGHTWEIGHT】Ultralight running backpack with wide and breathable shoulder straps distributes weight effectively and reduces strength consumption. The race vest provides you with the max support and min burden

5L waterproof running backpack,cycling hydration packs can ensure daily needs and hold 1.5L water bladder, umbrella, water bottle and mobile phone.37*19cm /17*10 inch (H*L),250g/0.55lb;
Lightweight Backpack:Ultra-light elastic fabric and quality polyester material,Only 0.55lb,help you go further and higher every time;
Breathable: Made with High-density Mesh, the fabric breathes and evacuates moisture,assure you of lasting coolness;