Sea to Summit Silk Blend Sleeping Bag Liner - Mummy Size:Mummy Lateral baffles are more comfortable

Lateral baffles are more comfortable than vertical baffles

K2 Base Camp

30L version

IMP's are invaluable for those pushing into harder grades and need to take advantage of all protection options

Sea to Summit Silk Blend Sleeping Bag Liner - Mummy Size:Mummy Lateral baffles are more comfortableDesigned primarily for comfort, the Silk Blend Liner adds warmth to your sleeping bag via the 72% Thermolite Pro yarns with infra red technology, Thermolite EcoMade fibres and 28% silk. The combination creates a soft, luxurious sleep environment. Comfort Stretch Panels along the seams boost sleeping comfort. Shoulder openings and a drawcord footbox add temperature regulation (and match the Free Flow zippers of Sea to Summit sleeping bags).