A compact and ultralight inflatable sleeping mat with an R Value of 3.6 that is ideal for backpacking and offers great comfort and packability.

From Sea to Summit:

The Sea to Summit Ultralight XR Insulated Air Mat delivers advanced warmth, comfort, and packability in a true ultralight design. This next-generation insulated sleeping mat is 14% lighter, 30% thicker, and 16% more insulative than before—making it ideal for backpacking, bikepacking, and fast-moving adventures. Featuring Air Sprung Cell™ technology, the Ultralight XR conforms to your body for even support and fewer pressure points, providing superior comfort for side sleepers and active sleepers alike.

What we think:

The Sea to Summit Ultralight XR Insulated is exactly the sort of sleeping mat that makes sense for UK backpacking. Lightweight enough for long days in the hills, but still warm and comfortable enough for proper shoulder season camps.

A lot of ultralight mats feel like they’ve been designed purely around weight savings. The XR Insulated strikes a much better balance. It packs down impressively small, but still gives you enough insulation and stability for colder nights above the tree line or exposed summit camps where the ground temperature really starts to matter.

The Air Sprung Cell construction does a noticeably better job of spreading pressure than many lightweight mats we’ve tested. You don’t get that harsh “floating on balloons” feeling that some ultralight designs suffer from. Instead, it feels stable, supportive, and surprisingly comfortable after long days on the trail.

If you’re looking for one lightweight insulated mat that can genuinely handle most UK mountain conditions without adding unnecessary bulk to your pack, the Ultralight XR Insulated is one of the strongest options out there right now.

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