STS - SEA TO SUMMIT Comfort Deluxe SI Mat

The Sea to Summit Comfort Deluxe SI Mat is the ultimate luxury sleeping pad designed for base campers and those seeking supreme comfort in the outdoors. Featuring a generous 4 inches of plush, open-cell memory foam combined with a 30D stretch knit polyester upper surface, it provides a cozy warmth when it's cool and a breathable coolness when it's hot, ensuring a restful night no matter the season.

This self-inflating mat includes the innovative Delta Core™ technology, which removes 40% of the PU foam’s volume in horizontal Delta-shaped cores. This design reduces weight and bulk without sacrificing durability or support, while maintaining consistent thermal insulation along the pad’s full length for excellent warmth, reflected in its outstanding R-Value of 6.5, making it suitable for 4-season use.

The integrated multi-function valve simplifies inflation, deflation, and fine-tuning of firmness. It features an inflate port with a one-way valve preventing air loss during setup, a rapid air dump port for quick deflation, and a fine-tune button for personalized comfort adjustments. The valve’s flip-over design prohibits air from re-entering as you roll the pad up, making packing efficient and straightforward.

Complementing the mat’s comfort is the Pillow Lock™ system, a set of self-adhesive hook-and-loop patches that secure your pillow in place without snagging clothing or lightweight fabrics, compatible with all Sea to Summit pillows.

Technical Specifications

• Thickness: 4 in / 10 cm
• Fabric: 30D polyester knitted upper, 75D polyester base
• Foam: Delta Core technology memory foam
• R-Value: 6.5 (excellent insulation for cold weather)
• Season Rating: 4 Season
• Comes With: Stuff sack
• Best Use: Camping, winter camping, base camp luxury

Available Sizes

Note: Due to its plush foam thickness and size, this pad is best suited for car or base camping rather than lightweight backpacking as its packed volume is similar to a folding camp chair.

Experience plush comfort, reliable warmth, and thoughtful design with the Sea to Summit Comfort Deluxe SI Mat — a sleeping pad that turns any outdoor adventure into a cozy retreat.