Sea to Summit Comfort Light Insulated Mat NEW Air Sprung Cells provide unrivalled comfort and support. The Comfort Light Insulated Regular is designed with 331 air sprung cells. Multi-Function Valve integrates inflation and deflation plus pressure adjustment into one low-profile design. Extruded TPU Lamination with Antimicrobial treatment prevents delamination and internal bacterial growth. Equivalent R-Value is 4.2. Thermolite with Exkin Platinum provides excellent insulation and warmth to weight ratios. High quality Nylon stuff sack and a 3M repair kit included.