At 3 inches thick, 77 inches long, and 25 inches wide, this mat provides plenty of room to stretch out. Go ahead and roll around: A pair of large vertical baffles on either side act as guardrails. And it packs down to 10 by 5.5 inches, which is relatively small considering its immense inflated size.
Extra large sleeping pads sound good in theory, but inflating that much cushion at altitude can be an unpleasant end to your day. Instead, blow into the 9.5-inch wide opening at the top of the Camper SV; this technique inflates the bag in under 30 seconds with far fewer puffs than required for traditional valves because your breath pulls nearby air along with it, amplifying inflation power. Top off with a traditional twist valve to get just the right amount of firmness. Bonus: You can reverse the lining in the rolltop opening to deflate the pad in seconds.