The Excursion is for the serious adventurer. Our extremely comfortable and stable rear inflation BC is ready for any adventure that you are. Rear inflation bladder provides up to 52 lbs. / 23.6 kg lift Air bladder is made of patented BioFlex material QLR4 Integrated Weight System 20 lbs (9 kg) plus dual 5 lbs. (2kg) trim weights Generous zippered utility pockets with knife mounts Pre-bent welded stainless steel D-rings Patented adjustable depth compensating cummerbund Streamlined harness with reinforced contoured shoulders Padded backpack with lumbar support Lift capacity: SM, MD 38 lbs / 17.25 kg; LG, XL 52 lbs / 23.6 kg