Sea to Summit's UltraLight Insulated (Regular). This is a lightweight and compact air mat with insulation, suitable for three seasons. Comes with a genuine pump sack (This eliminates the need to inflate by mouth, which helps prevent moisture buildup) ・Size: Regular ・Included: Stuff sack, pump sack, repair kit ・Condition: Air leak checked and confirmed ・R-value: 3.1 With an R-value of 3.1, it's perfect for spring to autumn mountain climbing. Air leak has been checked. It has been dried and stored after use. Please understand that this is a used item. Recommended for those aiming for UL (UltraLight) gear. Instant purchase is OK. Type: Air mat Thickness: 5-8cm