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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
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Description
Sea To Summit Hamelin Synthetic Sleeping BagThe Hamelin is a performance oriented synthetic sleeping bag designed for comfort. Built for the backcountry, it is at home in a range of climates and conditions especially when things turn damp. The weight efficient Contour shape offers room to move in any sleeping position, while Layers of Revive Loft are strategically placed to maximize insulation value. The Free Flow full length zipper with double sliders and short side zipper provide variability
The Hamelin is a performance-oriented synthetic sleeping bag designed for comfort. Built for the backcountry, it is at home in a range of climates and conditions – especially when things turn damp. The weight-efficient Contour shape offers room to move in any sleeping position, while Layers of Revive Loft are strategically placed to maximize insulation value. The Free-Flow full length zipper with double sliders and short side zipper provide variability and customizable ventilation. Go hard but rest easy knowing that the fabrics and Revive Loft insulation are RCS-recycled and bluesign-APPROVED. The Hamelin is one of our 1% for the Planet products.
Features
- Weight-efficient Contour shape is ideal for side-sleepers
- Full-length side zipper with double sliders extends through the footbox for customizable ventilation or to open the Hamelin as a quilt. The secondary side zipper provides arms-free functionality
- Technical hood, a draught collar and draught tubes retain your warmth on chilly evenings
- Soft, packable, recycled insulation is strategically placed to enhance core warmth
- YKK #5 zipper with zip plough provides reliable, snag-free operation
- Hamelin is part of our 1% for the Planet commitment
Tech specs
- Best Use Light Trekking, Car Camping, Wet Conditions
- Comes With Compression Sack
- Insulation 100% RCS-certified, post-consumer, recycled, multi-Denier synthetic insulation
- Material(s) Outer: 20D bluesign APPROVED, recycled polyester with non-PFAS DWR
Inner: 20D bluesign APPROVED recycled polyester liner - Shape Contour – relaxed mummy
- Zip Options YKK #5 Left sided two way full zipper + right sided two way half zipper with zip plough
| 30°F | 15°F | 30°F | 15°F | |
| Regular | Regular | Long | Long | |
| Weight | 2lb 8oz | 3lb 9oz | 2lb 13oz | 4lb 1oz |
| Compressed Volume | 8.4 L | 14 L | 9.6 L | 16 L |
| Compression Sack | 20 L | 26 L | 20 L | 26 L |
| Temperature Rating (ISO Lower Limit) | 30°F | 15°F | 30°F | 15°F |
| Women's Temp Rating (ISO Comfort) | 37°F | 27°F | 37°F | 27°F |
| Fits Up To Height | 6 ft 1 in | 6 ft 1 in | 6 ft 6 in | 6 ft 6 in |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Finally sleeping through the night without waking up drenched
I was dealing with night sweats almost every night. Waking up overheated, flipping my pillow over constantly, just uncomfortable and restless. It was starting to mess with my sleep in a real way.
Since switching to this cooling pillowcase (and pairing it with a cooling blanket), it’s been a completely different experience. I’m actually staying cool through the night and not waking up soaked or irritated.
The fabric feels cool to the touch right away and doesn’t trap heat like a regular pillowcase. It’s smooth, comfortable, and still feels good after washing. Not stiff or weird like some “cooling” materials can be.
Is it magic? No. But does it noticeably reduce overheating and help you sleep better? Absolutely.
If you run hot at night or deal with night sweats, this is one of those small upgrades that makes a big difference. I wish I had bought it sooner.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
so far so good
I was surprised at this pair of pillow cases only because the material seemed impossible to be cooling - it's that weird polyester blend. So far I have not awoken feeling sweaty around my face and scalp. I don't recall what I originally paid but I think it is great value for money! If you are sensitive to out of the box smell, I washed mine first and it didn't impede on the efficacy of the cooling!
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Reviewed in the United States on April 28, 2026
★★★★★ 5
It’s like sleeping on a beach in San Vito lo Capo
Italian voice:
I’m a big meaty fella so I put off a lot of heat ya hear. These pillow cases have changed my life. One moment they’re hot and the next you flip them and you’re blasted with a blast of ice cool what it feels like to chew 5 gum feeling capeesh. I would reccomend these pillow cases to even my grandma. If ya wanta get a rest so good that it feels like ya been sleeping with the fishes get these pillow cases, they’re the real deal. Then stop at Pauline’s joint and grab a slice of pizza say Vinnie sent ya. Anyways I gotta go my wife’s cooking up a mean lasgna and we’re gonna watch the dodgers. Let me know how these treat ya I guarantee they will change your life. Vinnie out
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Reviewed in the United States on February 15, 2026
★★★★★ 4
Soft "cooling" case.
Yes it is very cool when you lay on it. It doesn't stay cold though. Within a minute or 2 to whatever your temp is.
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Great for hair and skin. Great buy.
These pillow cases are great for my hair and skin. They look good, hold up well in the washer and dryer, and the price is great. They are cooling. Of course I wish they could be more cooling, but honestly I'm not sure that's even possible. Great pillow cases. Already bought more for other heads. Would buy again.
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Reviewed in the United States on March 11, 2026
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