Klimatic I Synthetic Sleeping Bag

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UOG TOP PICK: The Mountain Equipment Klimatic I Synthetic Sleeping Bag is eco-friendly, lightweight, and well-suited for summer camping. Made from 90% recycled insulation and 100% recycled fabrics, it features an Alpine fit, anatomically shaped hood, and foot box for maximum thermal efficiency. A top pick for light synthetic bags

Mountain Equipment says: 

A lightweight, packable and fully specified bag using 90% recycled POLARLOFT® insulation and 100% recycled fabrics to make it an ideal choice for summer adventures and hut trips.

Our Verdict

The Mountain Equipment Klimatic I Synthetic Sleeping Bag is an environmentally conscious choice for summer adventurers and hut-to-hut hikers. This lightweight bag, weighing 749g for the regular size, offers a good balance of comfort and eco-friendly design.

Temperature-wise, the Klimatic I is tailored for warmer conditions. With a comfort rating of 10°C and a comfort limit of 6°C, it’s well-suited for summer camping trips. 

The bag’s standout feature is its sustainability. It uses 90% recycled POLARLOFT® insulation and 100% recycled fabrics for both shell and lining, making it an excellent choice for environmentally-minded outdoor enthusiasts.

The Alpine fit, anatomically shaped hood, and foot box maximise thermal efficiency, while the full-length zip baffle helps prevent heat loss. At 26cm x 18cm x 17cm, it’s reasonably compact for a synthetic bag.

While not as compressible as down alternatives, the Klimatic I offers reliable insulation even in damp conditions—a key advantage of synthetic fill. It’s ideal for summer backpackers who prioritise sustainability and versatility in mild to cool conditions.

– Reviewed by Ultralight Outdoor Gear

Features

• Single layer construction throughout
• Alpine fit maximises thermal efficiency
• Anatomically shaped hood and foot-box
• Full length zip baffle
• Supplied with lightweight compression sack

Specifications

Regular

• Weight: 749g
• Std Pack Size: 26cm x 18cm x 17cm
• Comfort: 10°C/50°F
• Comfort Limit: 6°C/43°F
• Extreme: -7°C/19°F

Long

• Weight: 807g
• Std Pack Size: 26cm x 18cm x 17cm
• Comfort: 10°C/50°F
• Comfort Limit: 6°C/43°F
• Extreme: -7°C/19°F

Material & Construction

• 90% recycled POLARLOFT® synthetic insulation
• 100% recycled 20D shell and lining fabric is durable and comfortable

Help & advice:

• The Ultimate Guide to Lightweight Sleeping Bags
• Time-Saver Guide to Choosing a Sleeping Bag
• Recycled Content in Outdoor Gear