Sea to Summit Comfort Plus Self Inflating Large Sleeping Mat Red

Sometimes, the extra weight associated with a more comfortable nights sleep pays for itself many times over. Built wider than their mummy shaped cousins, the STS Comfort Plus S.I. Rectangular Mats are designed to maximise comfort and warmth for cool-climate treks. At 8 cm thick and a winter rated R-Value, the Comfort Plus S.I. Rectangular Mats provide luxury in a packable size. A 30D stretch knit fabric is used on the top layer for a great next to skin feel, and a lightweight 30D polyester with extrusion laminated TPU is used on the base for increased durability. All STS self-inflating mats feature their unique, multifunction reversible single valve, designed specifically for self-inflating mats. No more fighting re-inflation as you roll up your mat!

Delta Core-V technology

STS Delta Core technique is a truly innovative approach to reducing the weight and bulk of the polyurethane (PU) foam core of their Self-Inflating mattresses. Their patent pending coring process removes up to 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 Cores 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

STS have literally put a new twist on the 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. STS have 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 STS air mattresses and pillows.

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—the unique PillowLock hook-and-loop fastener patches come standard with all STS mats from mid-2019.

Features:

• Delta Core Technology

• Multi-function self inflating valve

• Anti-slip print on base of mat, helps hold your mat in place when camping on sloping ground is unavoidable

• Luxurious 30D stretch knit fabric for a soft next to skin feeling on top

• Lightweight 30D polyester with extrusion laminated TPU used on base

• Large horizontal triangular cores reduce the weight and bulk without sacrificing support and comfort

• PU foam is thicker on top of each Delta Core for better insulation directly under you. It also keeps top and bottom surface of foam intact ensuring consistent warmth along entire length of the mat and better bonding with shell fabrics

• Diagonal supporting foam walls help inflate the mattress and creates a more compact rolled mat

• Pillowlock system

• Generously-sized stuff sack with drawcords makes it easy to pack up your mat, then compress!

• 8cm thick