Cloud Peak 140

Synthetic 1 season sleeping bag

$69.99 $84.99

Synthetic fill 1 season sleeping bag with an 8°C limit for warm weather camping and summer bivvying. Uses hard-wearing, easy-care materials for heavy use

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Cloud Peak 140 Synthetic 1 season sleeping bag

$69.99 $84.99

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This item is on pre-order. It is due to arrive in stock soon and should be available from soon. We'll keep you up-to-date with your order progress and despatch as soon as it is available.

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The Cloud Peak 140 is a summer weight 1 season sleeping bag using Thermolite insulation. Hard-wearing and excelling in damp conditions, it’s an ideal sleeping bag for summer bivvies, festival camping and warm weather bikepacking.

  • Thermolite insulation is highly compressible and recovers well for repeated use
  • Synthetic fill works better when damp, ideal for multi-day trips
  • Durable outer fabric can take more of a beating for regular camping

Keeping your sleeping bag in top condition isn’t easy, especially in wet conditions, on multi-day trips or for whole seasons of use. The Cloud Peak 140 uses 140gsm Thermolite Ecomade insulation, a compressible fill with a high warmth to weight ratio. Like other synthetic fill, it retains its structure when damp, keeping you warm and not clumping like down can. This makes synthetic bags ideally suited to damp or condensation-heavy bivvying and camping.

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The Thermolite Ecomade fill recovers better after repeated compressions, providing long-lasting warmth for repeated use, season after season. It has much better washing durability too, so you don’t need to worry about bunging your bag in the washing machine when it gets a bit musty.

We’ve combined this long-lasting insulation with a hard-wearing nylon ripstop outer, to make Cloud Peak 140 a sleeping bag that’s designed to stand up to repeated heavy use. The outer fabric is treated with a PFC-free water repellent for extra damp protection.

Designed with a slightly tapered mummy shape, which uses less energy to warm up, the Cloud Peak 140 also uses a stitch-through construction to keep its weight down. A drawstring closure hood and neck baffle, and full-length zip baffle are there to keep out unwanted summer breezes. The Cloud Peak comes with an adjustable stuff sack to pack your sleeping bag down as small as possible.

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Key Features

  • Thermolite insulation is highly compressible and recovers well for repeated use
  • Synthetic fill works better when damp, ideal for multi-day trips
  • Durable outer fabric can take more of a beating for regular camping
  • Fill is designed to withstand repeated washing
  • Drawstring neck baffles and hood and a full-length zip baffle to lock in warmth
  • Baffles use a stitch-through construction saving fabric and weight
  • Outer fabric is treated with a PFC water repellent for greater damp resistance
  • 3 Year Alpine Bond

Vital stats

Temperature Ratings

AK Sleep Limit: 8°C/46.4°F
Our recommended usable limit of the bag. The majority of our customers will find this to be the tipping point between a comfortable and restless nights sleep.

TOG EN13537 Comfort EN13537 Limit EN13537 Extreme*
4.5 11°C/51.8°F 7°C/44.6°F -5.5°C/22.1°F

* The Extreme rating is the temperature at which the average woman can remain for six hours without risk of DEATH from hypothermia - but can still sustain cold injuries - under EN13537 conditions. We do not recommend using this bag in these weather conditions, or making your purchasing decision based on this value.


Fill: 140gsm2 Thermolite T3E-ML Ecomade
Outer Fabric: 40d nylon, 300T ripstop, 54g/m2
Inner Fabric: 20d polyester, 45g/m2


Internal: 200cm x 80cm (widest point)


900g (stuff sack weighs 100g)

Origin: China

Care & Environmental Advice

Product Care Information

Your sleeping bag doesn’t like to feel cooped up. Storing it uncompressed will extend its life and allow it to regain its loft quicker after unpacking.

Environmental considerations

Thermolite Ecomade
Thermolite EcoMade is a polyester-based insulation using 35% recycled content, including from plastic bottles.

The Cloud Peak 140 uses a PFC-free durable water repellent treatment on its outer fabric to help shed moisture. PFCs are potentially harmful chemicals that have been found to build up in the environment.


The Details