Size

The THERMOLITE® Reactor liner is our Top Selling And Lightest Thermal Sleeping Bag Liner.
It's an excellent cold weather option for those who need additional warmth. The hollow core fibres trap heat and offer extraordinary insulating properties.
This is a super stretchy, soft, and comfortable choice with a mummy shape, foot box and a drawcord hood. Compact and lighter weight than fleece, this is a best seller for good reason.
FEATURES
- Traps insulating air to increase warmth of a sleeping bag by up to 14°F /8°C
- Stretchy, Thermolite® fabric is incredibly comfortable.
- Lighter weight and more packable than fleece.
- Technical mummy-shape with drawstring hood.
- Easy care – machine wash with no special soap is needed. Avoid fabric softeners and dryer sheets.
- Keeps sleeping bag clean.
- Packs into its own Ultra-Sil stuff sack.
SPECIFICATION
- ADDED WARMTH: Up to 14°F / 8°C
- BEST USE: Backpacking, Camping
- COMES WITH: Ultra-Sil stuff sack
- MATERIAL(S): Thermolite polyester fabric
- SHAPE: Mummy
- COMPRESSED VOLUME: 1.0 Liters
- DIMENSIONS: 208 cm
- PACKED SIZE: 15 x 11 cm
- WEIGHT: 248 g

Standard Delivery
£4.99Standard Delivery is completed within 2-3 working days after order confirmation, excluding weekends and public holidays. A delivery fee of £4.99 is applied to orders with a cart value under £75.
Next Day Delivery
£6.99Next Day Delivery is available for orders placed by 1 PM from Monday to Friday. Orders placed after 1 PM will be processed on the next business day, excluding weekends and public holidays. Postage Refunds cannot be issued for any delays.
Next Day Guaranteed
£9.99Next Day Delivery is guaranteed for orders placed by 2 PM from Monday to Friday. Orders placed after 2 PM will be processed on the next business day, excluding weekends and public holidays. In case of any unforeseen delays, a postage refund will be issued.
Saturday Delivery
£24.99Saturday Delivery is available for Orders Placed on Monday to Thursday, and Friday before 1 PM. Orders placed after 1:00 PM on Friday will be processed on the next working day.

Pickup usually ready in 24 hours

STORE OPENING TIMES
Monday - 9:30am – 7:30pm
Tuesday - 9:30am – 7:30pm
Wednesday - 9:30am – 7:30pm
Thursday - 9:30am – 8:00pm
Friday - 9:30am – 7:30pm
Saturday - 9:30am – 7:00pm
Sunday - 11:00am – 6:00pm

All items purchased from us are covered by the manufacturer’s warranty. If an item develops a fault due to a manufacturing defect within the warranty period, we will offer one of the following resolutions:
- Replacement
- Repair
- Credit Note
- Full Refund
Please notify us within 48 hours of receiving your goods if you identify any defects.
If you find the size or color of your purchased item(s) to be incorrect, you are welcome to return them for an exchange. You can initiate an exchange request via our website or by scanning the QR code included on your packing note. Alternatively, you can reach out to our customer service team at customerservice@altimus.co.uk for assistance.
Product Code : 81667
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14 - Days easy return policy.
2 Years free extended warranty.
Free delivery over £75 (UK Only).