Patagonia Dirt Roamer Pack This pack combines a breathable mono-mesh back panel, a streamlined design for a stable fit, and multiple pockets for organized storage, allowing you to carry extra layers and all your gear for long bike rides on the trail or in inclement weather. Size: S/M 17.5 liters 53 x 25 x 15 cm Color: Black Weight: 676 g (1 lb 8 oz) Features: Durable Recycled Nylon Material Made with 100% recycled nylon, durable enough to withstand a lifetime of use. Breathable Mesh Back Panel Elevated mono-mesh back panel promotes breathability and doesn't absorb moisture. Comfortable Shoulder Straps and Hip Belt Regulator air mesh shoulder straps and hip belt for maximum breathability. Includes Hydration Pack Includes a 2-liter Hydrapak hydration reservoir that fits in a dedicated side-access sleeve. Key Clip Includes a key clip inside. Top Compression Straps Top compression straps are convenient for adjusting the load or carrying a helmet. Although it is new and unused, it has been stored at home, so please purchase only if you understand this. No claims and no returns, please.