Sea to Summit Comfort Plus Insulated Rectangular Mat NEW Air Sprung Cells provide unrivalled comfort and support. The Comfort Plus Insulated Regular Rectangular is designed with 596 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 5.0. Thermolite with Exkin Platinum provides excellent insulation and warmth to weight ratios. High quality Nylon stuff sack and a 3M repair kit included.