Sea to Summit Comfort Deluxe Self-Inflating Foam Camping Mattress – Large (79 x 29 x 4 in)

Premium comfort for four seasons

The Sea to Summit Comfort Deluxe Self-Inflating Foam Camping Mattress in Large size delivers generous sleep space with a 4-inch foam core and vertical sidewalls. It blends warmth, stability, and cushioned support for camping, guest rooms, or travel setups.

The pad is designed to perform across a range of conditions. Its insulated core and careful construction help create a cozy, stable lie on uneven ground, so you can rest more soundly whether you’re on a forest floor, a chilly campsite, or a spare room floor.

Smart design meets practical comfort

This 4-season sleeping pad uses a thoughtful coring technique to reduce weight and packed volume while maintaining warmth and durability. A 6.5 R-value helps minimize heat loss on cooler nights, allowing you to keep a comfortable temperature without adding bulk to your pack.

The top fabric is a soft, 30D stretch knit for a plush feel against the skin, while the base uses durable 75D polyester with a laminated TPU layer for longevity and moisture resistance. When fully inflated, the large surface measures 79 x 29 inches and 4 inches thick, providing ample space to spread out. When it's time to pack up, the pad compresses to a compact 7 x 31 inches and weighs about 5.8 pounds, making it a reasonable choice for car camping or minimalist travel.

Ease of use and included features

Inflation and deflation are made simple with a multi-function reversible valve that allows fast inflation, one-way deflation for quick packing, and fine-tuning of air pressure to suit your preferred feel.

In addition to comfort, the design supports practicality on the trail and at home. The Comfort Deluxe includes a stuff sack for easy transport, a field repair kit for quick fixes in the field, and PillowLock patches to secure a Sea to Summit pillow to the mat if you want a fixed pillow position during the night.

Use cases and who it suits

Envision weekend camping trips, longer campground stays, or a guest bed at home that still feels like a proper sleep surface. The large dimensions provide extra space for side sleepers or those who prefer a roomy feel, while the insulation and construction aim to maintain warmth without sacrificing portability.

Key specifications at a glance

• Thickness: 4 inches; Surface area: 79 x 29 inches
• Weight: ~5.8 pounds; Pack size: ~7 x 31 inches
• Materials: Soft 30D knit top; 75D polyester base with TPU laminate
• Insulation: 6.5 R-value
• Includes: stuff sack, field repair kit, PillowLock patches