ALPS Mountaineering Solitude Plus 3100 Cubic Inches Day Pack (Blue) Double Sewn Taped Seams ensures any hiker that their gear is in a durable pack Adjustable Shoulder Straps create the perfect fit and flexibility for anyone Multiple Zippered Pockets give hikers a variety of storage areas that are quick and easy to get to Hydration Pocket and Port is a nice feature for thirsty travelers on any day The Center Aluminum Frame Stay and the Padded Back with PE Sheet remain a main feature in ALPS packs