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Sea to Summit UltraLight Self Inflating Mat

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As low as €95.00 Regular Price €99.95
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R-rating 2.0 - 2.9

Quick overview

The Sea to Summit Ultra Light S.I. Mat is for ultra-light hikers who can’t go past the tried and true self-inflating foam mats. The 2.6 R-value provides the insulation needed through the shoulder seasons while the memory foam means you don’t have to exert yourself inflating your mat at the end of the day. The only mat in Sea to Summits Self Inflating range to come in an extra-small size, it’s easily fits into your ultra-light pack.

All of Sea to Summit's mats use the first ever, multi-function single valve designed specifically for self-inflating mats. No more fighting re-inflation as you try to roll up your mat!


Sea to Summit Ultra Light S.I. XS(mall) S(mall) R(egular) L(arge)
R-value 2.6 2.6 2.6 2.6
Thickness (cm) 2.5 2.5 2.5 2.5
Width (cm) 51 51 51 64
Length (cm) 125 170 183 198
Weight (grams) 395 520 550 720
Inflation type Self Inflating Self Inflating Self Inflating Self Inflating
Insulation material Synthetic Synthetic Synthetic Synthetic
Packed dimension (cm) 10.5 x 26 13 x 26 13,5 x 26 14 x 34
Intended use Minimalist, Lightweight Minimalist, Lightweight Minimalist, Lightweight Minimalist, Lightweight


  • Delta Core-V Technology
  • Anti-slip print on base of mat, helps hold your mat in place when camping on sloping ground is unavoidable
  • Lightweight 30D polyester with extrusion laminated TPU used on top and base
  • Small vertical Delta Cores in body contact areas (shoulders, hips and feet) keep you warmer
  • Larger vertical Delta Cores in non-body contact areas reduce the mat’s weight and bulk


  • Mat: 100% Polyester with TPU lamination
  • Valve 100% TPU
  • Insulation: 100% Polyurethan foam
  • Stuff Sack: 100% Polyester