This lightweight hydration vest and backpack keeps water bottles stable on your core and out of the way. A fully adjustable strap system lets you secure every part of the vest to conform to your body shape, including a chest strap that moves up and down. Features: HIGH VISIBILITY TO BE SAFE: Reflective material which is quite luminous at any light ray at night ensures safe running or cycling at night. PREMIUM MATERIAL: Made of firm, breathable, light and durable material. MULTI-FUNCTIONAL POCKETS: Enough pockets and pouches that can store items like cell phone, keys, thin raincoat, 500ml soft water bottle, 1.5L hydration bladder and other items for outdoor activities. LIGHTWEIGHT, ADJUSTABLE & VERSATILE: Fully adjustable and breathable design allows a full range of motion for all runners, joggers, bikers, kids and adults. Perfect for any outdoor activities such as running, cycling, walking, mountaineering and so on. COMFORTABLE FIT WITH SPECIAL DESIGN: This backpack gives a comfortable fit over sports gear and accommodates the majority of body sizes. Two sizes available: S/M, L/XL. Specifications: Type: Running Hydration Backpack Brand: AONIJIE Model: E906# Material: 100% Chinlon Color: Black Size: S/M (For chest circumference 80-97cm) / L/XL(For chest circumference 97-109cm) (Optional) Capacity: 5L Gender: Unisex Size: 41 * 39cm / 16 * 15in Net Weight: 230g / 240g Package Size: 32 * 13.5 * 6cm / 12.6 * 5.3 * 2.4in Package Weight: 342g / 12.1oz Package List: 1 * Hydration Backpack 1 * Emergency Blanket 1 * Cosy This soft hydration bottle is useful for outdoor sports like bodybuilding, playing basketball etc, also a nice choice for picnic, party and so on. Features: LIGHT WEIGHT & COMPACT: Soft bottle collapsible for easy use, storage and transport. SIMPLE: One hand operation with bite valve allows you to stay hydrated on the go, running etc. FUNCTIONAL: Wide mouth design with 2-piece cap comes apart for easy cleaning. RELIABLE: Constructed with TPU (thermoplastic polyurethane) for superior durability and flexibility. GREEN: Ultra-reusable and uses less energy and materials to make, BPA-free. Specification: Type: Soft Hydration Bottle Brand: AONIJIE Model: SD09-R250S Material: TPU Color: Dark blue Capacity: 250ml / 500ml (Optional) Water Temperature: 0-40 / 32-104 Net Weight: 27g / 0.95oz Size: 226 * 60mm / 8.9 * 2.4in Package Weight: 29g / 1.02oz Package Size: 9 * 8 * 5cm / 3.5 * 3.1 * 2.0in Package List: 1 * Soft Hydration Bottle