Sea to Summit Camp SI Sleeping Mat

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The Camp SI Sleeping Mat is a self-inflating mat that gives you durability and comfort at a great price. It features a 75D polyester that is tough and more abrasion resistant, Delta™ Core-V™ Technology that removes weight and bulk without compromising comfort and a special multi-functional valve that deflates the mat fast and with no fighting re-inflation when packing up. At 3.8cm thick and an R-value of 4 it is a comfortable mat year-round.


  • Delta™ Core-V™ Technology
  • Robust and durable 75D polyester with extrusion laminated TPU used on top and base
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  • 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
  • 3.8cm thick
  • Multi-functional, high flow-rate valve
  • PillowLock™ attaches your new-generation Aeros™ pillow to your mat, holding it in place for a slip-free sleep


Length 183cm (Regular), 198cm (Large)
Width 51cm (Regular), 64cm (Large)
Thickness 3.8cm
Rolled Size ⌀15.5 x 26cm (Regular), &8960;16.5 x 33cm (Large)
Fill Polyurethane foam
Average Weight 780g (Regular),1020g (Large)
Relative Warmth (R Value) 4 (2.8178m2.kelvins/watt)
Made From 75D polyester with extrusion laminated TPU

75D Polyester TP the 75D polyester is a robust and durable woven fabric with an extrusion TPU lamination and is used in Sea to Summit Self Inflating mats. The TPU lamination makes the fabric airtight and allows the PU foam inside our self inflating mats to be bonded to it.

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. Sea to Summit's unique approach uses sophisticated pressure-mapping data to create the blueprint for their 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, they have removed more foam to minimise the weight and packed size.

Multi-function S.I. valve: Sea to Summit have literally put a new twist on their very successful multi-function valve so it specifically addresses the inherent characteristic of self-inflating mats-that is, the problem of the foam trying to re-inflate as you're packing up. They've engineered the "one-way" inflation valve to be reversible and used it to prevent the mat from drawing air back in. This allows you to roll the mat up as small as possible without fighting re-inflation as you go. This patent-pending valve design has the same slim profile, faster inflation than traditional screw valves, easy pressure fine-tuning and super-fast deflation rate as Sea to Summit air mattresses and pillows.



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