Gossamer Gear Miniposa
The Miniposa builds on the popular features of the stalwart G4, effectively incorporating the "dual use" technique of ultralight backpacking. Your sleeping pad (NightLight, Z-Lite/Z-Rest, Thermarest 3/4 length, or other 20"-wide pad) becomes part of the pack frame by inserting into the back of the pack.
The Miniposa has the Mariposa family features in a trimmer silhouette, including hollow, aluminum-tipped, carbon fiber pack stays for real load transfer (removable for lighter loads), unique asymmetric side pocket design (right hand pocket is accessible while wearing the pack), dual function removable adjustable sternum strap/emergency whistle, and hydration bladder pocket with ports on each side. Cushy wicking fabric on the shoulder straps and hip belt prevent slipping, and the 3-dimensional weave aids in quicker drying. Multiple pockets help you organize your load. Tons of strategically placed lashing loops enable you to easily adapt the pockets to carry longer items by lashing them to the sides. Use for general lightweight backpacking with total loads of 20 lbs (9 kg) or less.