SKU: 51901889035

Sea To Summit Ultralight SI Sleeping Mat Large

Sale price$161.95 Regular price$179.95
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

Sea To Summit Ultralight SI Sleeping Mat Large"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. 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. The only mat in our S. I. range to come in an extra small size, it's easily fits into your ultra light

"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. 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. The only mat in our S.I. range to come in an extra-small size, it's 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!

FEATURES

  • Delta Core-V Technology
  • Anti-slip print on base of mat, helps hold your mat in place when camping on sloping ground is unavoidable
  • Lightweight 30D polyester with extrusion laminated TPU used on top and base
  • 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
  • 2.6 equivalent R-value

TECH SPECS

Weight
L: 720g
Dimensions
L: 198 x 64 x 2.5cm
Material

Outer: 100% Nylon with TPU Lamination
Insulation: 100% Polyester
Valve: 100% TPU
Valve Flap: 100% Silicone
Stuff sack: 100% Polyester

Packed dimensions
L: Ø14.1 x 33cm
Thickness

2.5cm

R-value

2.6

MENTION IN THE COMMENTS IN THE CHECKOUT SECTION THAT YOU ARE A CADET AND WE WILL THROW IN A FREE GIFT FOR ORDERS OVER $50

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51901889035

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4.4 ★★★★★
Based on 11 reviews
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Verified Purchase
Naomi L.
Natrona Heights, US
★★★★★ 5
Wonderful
Super comfy and easy on and off, yet stylish imo! I could walk miles in these as a 56 yo and have worn them for three years! I hope they never stop making them. The only tweek I would suggest is to cover the footbed with leather or suede not cloth so they would last longer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
J
Verified Purchase
Johsz Family
Houston, US
★★★★★ 5
Great value and super comfy!
Size: 7, Color: Sand
These shoes are so comfortable and my new go to for summer. They are lightweight and fit like a glove. Great value
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Reviewed in the United States on May 25, 2026
K
Verified Purchase
Kindle Customer
Cuba, US
★★★★★ 5
Lovely sandals!
I highly recommend! These are so comfortable! Right out of the box, they can be worn all day. The velcro-adjustable straps are great for making for a perfect fit. The aren't clunky to wear, even though they appear to be. They're super cute, in my opinion. The sock liner is textile, so feet feel good all day, not slimy, like leather and suede can sometimes make feet feel if socks aren't worn.
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Reviewed in the United States on March 17, 2026
P
Verified Purchase
Pamela
Waukegan, US
★★★★★ 5
Cute and Comfortable
Size: 10, Color: Black
This is my second pair. I bought the sand color at my local Macy's. I got their last pair. I have issues with back pain and ankle swelling and pain. These are so comfortable I had to get them in Black. The adjustable straps are great. My feet are a little bit wider because of the swelling issues. So if you have very narrow feet these might be a little big. You might want to go down a half a size. But otherwise I wear a size 10 and they fit perfectly. I don't think the picture does the color justice. The black almost looks like velvet, it's very deep and rich. I wore them out today for the first time and got lots of compliments. The footbed is very comfortable with the memory foam. Lots of support. I noticed my back and ankle pain is much better wearing these. I've never owned UGG before. If these hold up really well and continue to stay comfortable, I will be purchasing other styles for fall and winter.
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Reviewed in the United States on May 1, 2026
T
Verified Purchase
Tilly
Carnegie, US
★★★★★ 5
Great fitting sandals
Size: 7.5, Color: Sand
Great fitting. Beautiful. Fit like a glove. Great to walk in. Great quality. Lightweight. All in one gorgeous sandals.
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Reviewed in the United States on May 11, 2026

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