Sea To Summit Comfort Plus sleeping mats use dual layer construction to give you the most effective system for fine-tuning your comfort level available in any air mattress.__ The two independent offset high-resolution cell layers support and distribute your body weight and shape, with uniform insulation and cushioning. They can be pressurised independently, so you can inflate the top layer to your personal comfort, while maintaining a high-pressure base layer for protection from rough or uneven terrain. Both layers can be adjusted independently using the fine tune valve to give the perfect level of softness and support.__ All Sea to Summit sleeping mats come with a quality stuff sack, a repair kit containing six self adhesive patches for repairing punctures in the field, and a spare silicone one-way valve flap ... More info