The Bug was designed specifically for multi-pitch, long routes that are done in a single day. Its rounded rectangular shape maximizes volume and minimizes interference while in use. The volume is ideal for carrying gear on the approach and when climbing (hydration system, food, clothing, shoes, etc). Everything has been designed for maximum comfort while climbing with the BUG on the back: minimal bulk, shoulder straps allowing freedom of arm movement, comfortable and ventilated back panel, foldaway waistbelt, high positioning allows access to back of harness (for chalkbag, gear), lateral compression straps.