FREE UK DELIVERY £50+ | FREE UK RETURNS | EU & INT'L SHIPPING

FREE UK DELIVERY £50+ | FREE UK RETURNS

camp
  • By Activity
  • Runner in grey jacket and orange cap jogging on a dark forest path at dusk.

    Fastpacking & Running

  • Two hikers wearing headtorches and backpacks walking across rocky mountain terrain at dusk.

    Walking & Hiking

  • Tent pitched on moorland at sunset with mountains and lochs in the distance.

    Wild Camping

  • Group gathered around a campfire at night beside a glamping bubble tent strung with fairy lights, surrounded by birch trees.

    Vanlife

  • brands
  • journal
  • A hiker in a yellow and blue jacket takes a selfie on a mountain summit overlooking a lake and valley below.

    Best Outdoor YouTubers, TikTokers and Vloggers

  • Bright orange tent glowing from within at dusk in a snowy forest clearing.

    Forest Floor to Cosy Corner

  • Snow-capped mountains and moorland at Glencoe, Scotland, at sunset with a small lochan in the foreground.

    Mountain Base Camps | Glencoe, Scotland

  • Jørgen standing in a doorway wearing a dark blue shirt, with a home interior visible behind him.

    Interview: Jørgen Amundsen, Amundsen Sports

  • Lit candles in dark glass jars arranged on woven placemats with neutral textiles and dried botanicals.

    Nordic Nests

  • Ticket to the Moon hammock suspended between trees with mountain lake view below.

    Ticket To The Moon | The Story

  • Aerial view of a wild landscape with wetlands, blue waterways and rolling hills under a clear sky.

    Wild Places | 6 Amazing UK Rewilding Success Stories

  • Golden chanterelle mushroom growing in woodland moss and grass.

    Foraging Guide: Chanterelle Mushroom

  • bags-edc
  • home-garden
  • clothing
  • footwear
  • Lighter, warmer, more stable than ever

    There's a reason ultralight backpackers obsess over their sleeping mats – one, because every gram counts when you're hauling your life into the hills, and two, every cold night reminds you why you should've gone for the insulated option. Sea to Summit's Ultralight XR solves both problems with a redesign that's 14% lighter yet 16% warmer than its predecessor. The secret? 151 individual Air Sprung Cells that conform to your body rather than bouncing you about like a toddler on a trampoline, plus ThermalCore insulation with a proven heat-reflective layer (R-value of 3.6). At 6.5cm thick, it delivers proper comfort without the bulk. The hybrid 30/40D nylon fabric with TPU laminate has a ten-year proven track record, which means it'll outlast most of your other kit. And the stuff sack doubles as a pump sack, so you're not huffing and puffing yourself dizzy at bedtime.

      • 151 Air Sprung Cells provide stable, pressure-point-reducing comfort
      • ThermalCore insulation with TRM heat-reflective layer boosts R-value by 16% (ASTM-rated R-value of 3.6 as of 2026)
      • 14% lighter and 53% smaller packed volume than previous model
      • 30/40D nylon with extruded TPU laminate and Ultrafresh antimicrobial treatment
      • XPRESS valve for rapid inflation and deflation
      • Integrated pump sack stuff sack eliminates breath moisture
      • 6.5cm thickness across all sizes
      • Available in Small (168cm), Regular (183cm) and Large (198cm)
    • Size Dimensions Packed Dimensions Preliminary Weight
      Small 168 × 55 × 6.5cm 19 × 10cm 390g
      Regular 183 × 55 × 6.5cm 19 × 10cm 415g
      Large 198 × 64 × 6.5cm 22 × 10.5cm 530g
      • 30/40D hybrid fabric
      • Extruded TPU internal laminate
      • Ultrafresh antimicrobial treatment
      • ThermalCore insulation with TRM reflective layer
      • Sustainability through Longevity - limited lifetime warranty guaranteeing freedom from material and manufacturing defects
    • What is it that attracts us to the idea of adventure? For Sea to Summit, it’s about freedom and self-reliance – the ability not just to survive, but to thrive in any environment. But although the brand takes its gear seriously, it does so with trademark Aussie humour and blunt, no bullsh*t candour. That’s the way it’s always been, ever since founder Roland Tyson made his first outdoor gear on an old industrial sewing machine in his childhood bedroom back in 1983, at the age of 17. Soon he was designing and manufacturing equipment for other Australian adventurers – and in 1991, he outfitted an unusual first ascent of Everest, in the form of a 1,126 kilometre journey from sea level to the mountain’s 8,848-metre summit. The name Sea to Summit was born.

      In 1993, Roland was joined by Penny Sanderson, another Aussie explorer and innovator. Their designs were honed on their adventures, as they spent months climbing, sailing, trekking, overlanding and biking. Nearly thirty years later, Sea to Summit is still 100% Aussie owned and operated, and still putting painstakingly designed gear into the hands of customers worldwide.

    Ultralight XR Insulated Mat



    Size:
    Colour: Arrowwood
    Arrowwood
    Only 3 left
    Free UK Shipping On Orders £50+
    Free Returns For UK & EU Customers
    Price Match Guarantee
    No EU Customs Fees
    Platinum Trusted Service Award 2025

    Lighter, warmer, more stable than ever

    There's a reason ultralight backpackers obsess over their sleeping mats – one, because every gram counts when you're hauling your life into the hills, and two, every cold night reminds you why you should've gone for the insulated option. Sea to Summit's Ultralight XR solves both problems with a redesign that's 14% lighter yet 16% warmer than its predecessor. The secret? 151 individual Air Sprung Cells that conform to your body rather than bouncing you about like a toddler on a trampoline, plus ThermalCore insulation with a proven heat-reflective layer (R-value of 3.6). At 6.5cm thick, it delivers proper comfort without the bulk. The hybrid 30/40D nylon fabric with TPU laminate has a ten-year proven track record, which means it'll outlast most of your other kit. And the stuff sack doubles as a pump sack, so you're not huffing and puffing yourself dizzy at bedtime.

      • 151 Air Sprung Cells provide stable, pressure-point-reducing comfort
      • ThermalCore insulation with TRM heat-reflective layer boosts R-value by 16% (ASTM-rated R-value of 3.6 as of 2026)
      • 14% lighter and 53% smaller packed volume than previous model
      • 30/40D nylon with extruded TPU laminate and Ultrafresh antimicrobial treatment
      • XPRESS valve for rapid inflation and deflation
      • Integrated pump sack stuff sack eliminates breath moisture
      • 6.5cm thickness across all sizes
      • Available in Small (168cm), Regular (183cm) and Large (198cm)
    • Size Dimensions Packed Dimensions Preliminary Weight
      Small 168 × 55 × 6.5cm 19 × 10cm 390g
      Regular 183 × 55 × 6.5cm 19 × 10cm 415g
      Large 198 × 64 × 6.5cm 22 × 10.5cm 530g
      • 30/40D hybrid fabric
      • Extruded TPU internal laminate
      • Ultrafresh antimicrobial treatment
      • ThermalCore insulation with TRM reflective layer
      • Sustainability through Longevity - limited lifetime warranty guaranteeing freedom from material and manufacturing defects
    • What is it that attracts us to the idea of adventure? For Sea to Summit, it’s about freedom and self-reliance – the ability not just to survive, but to thrive in any environment. But although the brand takes its gear seriously, it does so with trademark Aussie humour and blunt, no bullsh*t candour. That’s the way it’s always been, ever since founder Roland Tyson made his first outdoor gear on an old industrial sewing machine in his childhood bedroom back in 1983, at the age of 17. Soon he was designing and manufacturing equipment for other Australian adventurers – and in 1991, he outfitted an unusual first ascent of Everest, in the form of a 1,126 kilometre journey from sea level to the mountain’s 8,848-metre summit. The name Sea to Summit was born.

      In 1993, Roland was joined by Penny Sanderson, another Aussie explorer and innovator. Their designs were honed on their adventures, as they spent months climbing, sailing, trekking, overlanding and biking. Nearly thirty years later, Sea to Summit is still 100% Aussie owned and operated, and still putting painstakingly designed gear into the hands of customers worldwide.

    Sea to Summit

    Ultralight XR Insulated Mat

    Size: Regular
    Colour: Arrowwood + 0
    Colour Arrowwood
    Arrowwood