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Sea to Summit Ultra Light Self Inflate SI Mat (Small)

The Sea to Summit Ultra Light Self Inflate mattress is featherweight and packable for minimalist fast hikes, the Ultralight Self-Inflating mat comes in at 2.5cm thick with the small size weighing a mere 520g. The weight is kept to a minimum by using a 30-D polyester and our Delta Core-V™ vertical coring which keeps body contact areas warmer while still offering great support and packability.


  • Anti-slip print on base of mat, helps hold your mat in place when camping on sloping ground is unavoidable.
  • Multi-function high flow-rate valve provides fast inflate, deflate and easy fine-tuning for personalised comfort
  • Includes a repair kit for easy puncture repair in the field
  • Included PillowLock patch system attaches Sea to Summit pillows to your mat, holding it in place for a slip-free sleep
  • Included stuff sack


  • Length: 170cm
  • Width: 51cm (Shoulder)
  • Thickness: 2.5cm
  • R-Value: 2.6
  • Insulation: Polyurethane foam
  • Fabric: Lightweight 30D polyester, laminated TPU used on top and base.
  • Season: 3
  • Supplied with: Stuff Sack
  • Pack size: 11 x 24cm
  • Weight: 520g

Personal Shopping - By Appointment

Would you like to try on some climbing shoes, running shoes or mountain boots for size before you make your purchase? If so, then why not book an appointment with us today! We can offer you a bespoke one-on-one shopping experience with one of our experienced staff members.