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- USA
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Reactor Lightweight Liner Sea To SummitOptimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite Pro fabric, which uses infrared absorbing ceramic pigments and hollow core fibres to trap body heat. Adding up to 4C 7F of warmth with minimal bulk, its ideal for ultralight expeditions. Stretch knit fabric and articulated arm openings ensure unrestricted mobility. Treated with HeiQ Fresh odour control, its quick drying,
Optimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite® Pro fabric, which uses infrared-absorbing ceramic pigments and hollow-core fibres to trap body heat. Adding up to 4°C|7°F of warmth with minimal bulk, it’s ideal for ultralight expeditions. Stretch-knit fabric and articulated arm openings ensure unrestricted mobility. Treated with HeiQ Fresh odour control, it’s quick-drying, machine washable, and helps prolong your sleeping bag’s lifespan by reducing wash frequency.
FEATURES
- Lightweight and insulative, Thermolite® Pro technology with hollow-core fibres and infrared-absorbing pigments enhances warmth with minimal pack size
- Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Fits any sleeping bag - Stretch fabirc means the Reactor Liner fits any shape of sleeping bag
- Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
- Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact
TECH SPECS
Weight
S: 235g
R: 255g
L: 260g
Certification
RCS - 1114661
Dimensions
Short: 80 x 178cm
Regular: 80 x 193cm
Long: 80 x 198cm
Ideal for
Backpacking, Cycle touring, Paddle touring
Packed dimensions
10 x 10 x 18cm
Recommended user height
S: 170cm
R: 183cm
L 198cm
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
4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Beat the Humidity with This Citrus Powerhouse
Scent: Bergamot, Size: 16 Fl Oz (Pack of 1)
In the middle of a brutal, humid Philippine summer, finding a body wash that actually boosts your confidence is a game-changer. Cremo’s Italian Bergamot isn’t just a soap; it’s a full olfactory experience. It opens with a vibrant, tart Italian bergamot that immediately cuts through the heat, followed by the freshness of vetiver, and the neroli blossom adds a sophisticated floral touch.
True to Cremo’s Reserve collection, the scent is beautifully layered. It builds in intensity as you lather, allowing the earthy, fresh vetiver to anchor the citrus. Unlike many drugstore options, this lingers—stepping out of the shower, you can still catch the crisp citrus and the clean, woody dry-down on your skin. It’s the ultimate reset for a hot day.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Awesome
Scent: Blue Cedar & Cypress, Size: 16 Fl Oz (Pack of 1)
This soap smells fantastic, and leaves you feeling clean! Great find, went back to buy the other scents!
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Reviewed in the United States on May 29, 2026
★★★★★ 4
I Smell Like a Gentleman Who Owns a Fireplace
Scent: Bourbon Oak, Size: 16 Fl Oz (Pack of 1)
The fragrance is warm, woody, and slightly sweet...that low amber note that smells expensive without trying to smell expensive, which, as we all know, is the actual expensive smell. My wife walked past me twenty minutes post-shower and said, unprompted, "You smell really good." I nodded like I had planned this.
The lather is genuinely rich; squeeze a modest amount and it blooms into a thick, creamy foam that covers everything efficiently. The texture is silky rather than watery, which matters more than people admit. Watery body washes feel like rinsing off with slightly scented regret. This one feels intentional. It cleans, and your skin actually feels clean afterward, not just rinsed. And the moisturizing? I wasn't expecting it. No greasy film, no lotion-begging dry patches by midday. Just quietly softer skin that doesn't make a big announcement about it.
Now, my honest gripe: the scent longevity has a ceiling. By mid-afternoon you're back to neutral. That's the gap between four stars and five for me. For daily freshness and an incredible morning window of smelling genuinely great, it absolutely delivers...but it won't carry you to bedtime.
On value: 16 fl oz is decent, the lather is efficient so the bottle lasts, and the price sits in that sweet spot where you feel like someone who makes slightly elevated but still reasonable choices, which is exactly the vibe this entire product is going for.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Lathers great in a small amount!
Scent: Bergamot, Size: 16 Fl Oz (Pack of 1), Scent: Bergamot, Size: 16 Fl Oz (Pack of 1)
Lathers great for a small amount! A fair price for the amount and rich content. I just bought, used and love it. Definitely will purchase again. I love the sophisticated yet sensible smell doesn't overpower. In my perception it is a unisex scent as I am a woman and bought for myself.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
My favorite body wash
Scent: Bergamot, Size: 16 Fl Oz (Pack of 1), Scent: Bergamot, Size: 16 Fl Oz (Pack of 1)
My go to body wash, you just get so much for the price and it lasts forever! The smell itself is also very relaxing after a long day. It also lathers quite nicely and does it's job well, would definitely recommend
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Reviewed in the United States on April 13, 2026
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