The Mares XR Pure Heavy Sidemount System was designed by Mares for sidemount lovers diving in temperate waters with hardware made from stainless steel. 

The larger bladder and stainless steel accessories compensate for all that extra neoprene needed to keep you warm, meaning less lead is required. The super durable bladder made from hardwearing ballistic nylon has a 16 litre capacity giving plenty of lift with detachable weight pockets.