Large frame Designed to carry heavy loads without sacrificing comfort, Mountain Hardwear's BMG 105 backpack features a FitLock waistbelt with a removable horizontal stay and a versatile alpine suspension system for comfort during multiple day trips on the trail. Versatile alpine suspension provides outstanding stability, comfort and support Low-profile FitLock waistbelt provides custom fit and outstanding support to ensure comfort with heavy loads Removable horizontal stay behind waistbelt provides enhanced load transfer Alpine compression strap system shrinks pack to minimal volume, secures overloads, and tucks inside front panel when not in use FlatTop design allows pack to be used without top lid Removable top lid with zip pocket and webbing loops Skirt extension adds 625 cu.in. of carrying capacity BigMouth lower compartment provides a wide-mouth opening and load compression Large front zip pocket provides quick access to essentials Stowable sleeping pad straps Hydration system compatible (reservoir not included) Padded and ventilated back panel Padded shoulder straps with adjustable sternum strap Internal frame Pack material: 420 denier nylon and 840 denier ballistic nylon Frame type: Internal Frame material: High-density polyethylene (HDPE) Hydration compatible: Yes Pack loading: Top Ski carry: Yes Ice tool/trekking pole loops: Yes