3 Season Camping Sleeping Bags on Sale at The House. We carry the best brands such as Kelty, Coleman, Marmot, Mountain Hardwear at really low prices. These Cold Weather Sleeping Bags are easy to maintain and will keep you insulated during warm winters or cool summer nights. If you need something versatile, we also carry the Dual Temp sleeping bags which can act as light 4-season sleeping bag. Orders shipped within 24 hours M-F.