The SirJoseph mummy sleeping bag Light Series Koteka III 290 190L - Black is a down three-season ultralight sleeping bag especially for participants in expeditions, extreme crossings, mountaineering, arctic or desert climbs. But fans of extremely low weight and volume will also enjoy this sleeping bag.

By using the special new ultralight Pertex Quantum Y outer material, the highest quality springs and functional accessories, the Koteka sleeping bag has twice the volume and weight of a classic sleeping bag with the same thermal comfort. With this sleeping bag, you are really going to appreciate the minimal volume and low weight. Every gram you don't have to carry you are happy with during a trip. Also, the new Pertex material offers excellent resistance to abrasion and feather penetration.

Below are the specifications of the SirJoseph mummy sleeping bag Light Series Koteka III 290 - Black:

• Mummy shape adapts perfectly to the human figure
• Use of H chambers in the sleeping bag
• Closed chambers prevent springs from moving throughout the sleeping bag and allow washing and easy maintenance
• Self-adjusting clips make it possible to adjust the circumference of the collar and hood with one hand
• A 2D collar separates head space and insulates body space
• Compression and storage bag is included
• Compression bag reduces volume by up to 30%
• A special strip supported by the zips prevents heat escaping through the zip and prevents the zip from getting stuck in the fabric
• Dual-chamber bottom
• 800 cuin / oz
• Outer material: Pertex Quantum Y
• Inner material: Softex® Nius LT
• Filling: goose feathers
• Left zip only, cannot be linked
• Double-sided zip allows the sleeping bag to be opened from the top and bottom
• Loading weight 290 grams of feathers
• Suitable for a person up to 190 cm
• Shoulder 81 cm, Hip 65 cm, Foot 31 cm
• 520 grams
• In compression bag 20 x 14 cm

For the outside of the sleeping bag Pertex Quantum Y has been used, the unique Y-shaped fibre in the material provides a locking effect and increases the durability of the structure. Ultra-light material used specifically for in extremely lightweight sleeping bags and windbreakers. Despite its light weight, it meets high requirements in terms of air resistance and against spring penetration. Water-repellent 380mm H2O DWR adaptation, 90% water resistant and 90% breathable with a weight of 28g/m2. The inside is made of Softex® Nius LT.

The goose down used with a fullness of 800 cuin / oz (measured according to a European standard) is of exclusively European origin. The emphasis here is on maximum warmth, loft and minimum weight. The goose down with the best properties, with the highest dust particle ratio. The feathers are veterinary tested and all parameters mentioned are based on the international IDFB (International Down and Feather Bureau) protocol. Goose down is 100% natural, 100% recyclable and easily biodegradable.

Also available to order in inner sizes 170/190/200 cm.

Extreme tested: -15°C / Low Comfort: 0.5°C / High Comfort: 5.5°C

Below is an explanation of these temperatures:

The sleeping bag comes with a compression bag. The recommended body height for this sleeping bag is 190 cm.

Also watch the video to get a good look at the sleeping bag.