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Sea to Summit Camp Mat S.I.


Durable and comfortable all-rounder.


  • Multi-function high flow-rate valve provides fast inflate, deflate and easy fine-tuning for personalised comfort
  • R-value: 4.2
  • Included Pillow Lock™ system attaches Sea to Summit pillows to mat
  • Includes repair kit


  • Weight: 780g
  • Dimensions: 183 x 51 x 3.8cm
  • Dimensions (packed): ø15.5 x 26cm
  • Thickness: 3.8cm
  • R-Value: 4.2

Delta Core-V technology removes up to 20% of the weight and bulk of the polyurethane (PU) foam of a self-inflating mattress, while maintaining comfort and insulation.

Our unique approach uses sophisticated pressure-mapping data to create the blueprint for our distinctive graduated core pattern. Where extra warmth and support is needed for the body contact areas-shoulders, hips and feet-the core holes are smaller. In the less critical areas, we have removed more foam to minimise the weight and packed size. Delta Core-V technology is used in our Ultralight SI and Camp mat SI models.