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Ultralight SI Mat

Sea to Summit Ultralight SI Mat

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$ 139.99

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Light and packable for minimalist fast hikes.
Our Ultra light S.I. Sleeping Mat is for ultra-light hikers who can’t go past the tried and true self-inflating foam mats.

  • SKU: AMSIULR

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  • In stock Free shipping (excludes bikes) Free shipping is only applied for orders which are shipped within Australia.

Product description

Light and packable for minimalist fast hikes.

Our Ultra light S.I. Sleeping Mat is for ultra-light hikers who can’t go past the tried and true self-inflating foam mats.

DELTA CORE-V

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.

ANTI-SLIP SILICONE PRINT

Ever woken up cold because you slipped off your sleeping mat in the middle of the night? Not any more. Anti-slip silicone print patterns to help your sleeping bag stick to your mat, and your mat to the tent floor.

MULTI-FUNCTION S.I. VALVE

We have literally put a new twist on our 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.We’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 our air mattresses and pillow.

PILLOWLOCK™ SYSTEM

Easily secure your Sea to Summit pillow to your Sea to Summit mat for a slip-free sleep.
Designed to keep your pillow exactly where its meant to be—on your sleeping mat—our unique PillowLock™ hook-and-loop fastener patches come standard with all our mats from mid-2019.

R-VALUE

ASTM F3340-18 R-values

An R-value (Resistance-value) is a metric used to rate how effectively your sleeping mat resists heat loss. It’s the only way to know how well your mat will prevent your body heat being leeched away by ground temperatures (which can be a lot colder than air temperatures).

This value can be tested in-house but at Sea to Summit our mats are independently tested at a laboratory to precisely controlled standards.

The new industry standard ASTM F3340-18 testing has now been introduced and all Sea to Summit mats released from 2020 onwards are tested to this standard.

FEATURES

The only mat in our S.I. range to come in an extra-small size, it easily fits into your ultra-light pack.
All of our S.I. 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!

  • 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 Pillow Lock™ system attaches Sea to Summit pillows to mat
  • Includes stuff sack

CONSTRUCTION & MATERIALS

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.

  • Delta Core-V™ Technology
  • 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
  • Lightweight 30D polyester with extrusion laminated TPU used on top and base

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