2.5L Hydration Pack - Lightweight Running Vest with 2 Soft 500ML Water Bottles - Marathon & Cross Country Backpack for Women & Men - Perfect for Hiking, Cycling, Trail Running and Outdoor Adventures

Reflective strip design, ensure your safety in the night running environment.Size:S/M, recommended chest circumference 30.7-35.4in, M/L, recommended chest circumference 35.4-40.1in, L/XL,recommended chest circumference 40.1-45.2in.If your waist size can be used in both sizes, it is recommended to choose a smaller size.Package: 1* Hydration Pack and 2PCS 500ML water bottles/ Only 1* Hydration Pack

Material: 75% nylon, 25% spandex, lightweight, close-fitting, durable.

Ultralight: Weight approx 120g, to meet the long-distance running and cross-country running needs.

Breathable and Comforable: the fabric breathes and evacuates moisture, ergonomic design.

Capacity: Suit for 500ml bottles in the front bag, it can store the items like cell phone, keys, thin raincoat,etc.

Extensive Applications: It can be applied to various outdoor sports, such as marathon, hiking, climbing, cycling, etc.