Sea To Summit Ultralight Self Inflating Womens Mat

Designed to meet the unique needs of female physiology, the Women’s Ultra Light S.I. Mat provides increased warmth and sleeping comfort in a small and light package. The foam used in our Women’s specific Delta Core-V graduated pattern uses a mix of smaller holes and solid foam under core body zones for extra warmth where women often feel the cold most.

Featuring a women’s specific shape that is wider at the hip and narrower at the shoulder, the anti-slip print on the top and base of the mat holds it in place when camping on sloping ground is unavoidable. Made from lightweight 30D polyester with extrusion laminated TPU, it packs down incredibly small for minimalist adventures.

Delta Core-V technology

Delta Coring V technology removes 20% of the weight and bulk of the polyurethane 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 technology

Delta Core-V technology is used in our Ultralight SI and Camp mat SI models.
The Delta Coring technique is a truly innovative approach to reducing the weight and bulk of the polyurethane foam core of our Self-Inflating mattresses. Our patent pending coring process removes 40% of the initial volume of the PU foam, retaining enough for optimal support and comfort, while minimising the packed weight and size of the final mattress. Importantly, this coring technique has the additional benefit of keeping the top and bottom surface of the PU foam completely intact. This ensures consistent warmth along the full length of the mattress, avoiding the vertical holes or frame-like gaps that have traditionally allowed warmth to leach downwards. The full foam surface also provides significantly improved bonding of the foam to the shell fabrics of the mattress, thereby greatly reducing the chance of delamination. The shape and size of the Delta CoresTM are adjusted across the different thicknesses of our mattresses to ensure strength and durability, while still giving the user excellent support and self-inflating performance.

A multi-function valve specifically designed for self-inflating mats

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 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 pillows.