* Built of rugged 100% recycled nylon * PFC-free durable water repellent (DWR) finish helps repel rain * Highly breathable Regulator® air-mesh shoulder straps and hipbelt keep you cool and comfortable * Suspended mesh back-panel construction provides excellent airflow and prevents moisture buildup for all-day comfort * Sleeve inside can hold gear and is also hydration compatible (hydration reservoir not included) * On-the-go accessible hipbelt and side pockets secure small items while you're on the move Best Use Hiking Trail Running Bag Style Backpack Frame Type Frameless Gear Capacity (L) S: 22 liters M: 22 liters L: 24 liters Gear Capacity (cu. in.) S: 1,343 cubic inches M: 1,343 cubic inches L: 1,465 cubic inches Weight S: 1 lb. 8 oz. M: 1 lb. 8 oz. L: 1 lb. 10.6 oz. Fits Torso Length (in.) S: 14-17 inches M: 16-19 inches L: 19-21 inches