Two models have a comfortable drawstring at the feet to ensure greater ventilation and to be able to walk comfortably while wearing the sheet, only the measurements between these two change with the compact one being 198 cm.
The latest model, however, does not have the lower drawstring and has an intermediate size.

• Increased thermal performance thanks to reduced heat loss during sleep. The Reactor liner improves the performance of your sleeping bag and mattress in the coldest environments.
  
• Thermolite Pro technology uses honeycomb knit fibers and infrared-absorbing ceramic pigments to reflect body heat back to the wearer.
• The drawcord footwell can be opened or closed for optimal comfort and integrates seamlessly with the footwell of our Free-Flow Zip system on select Sea to Summit sleeping bags.
• HeiQ Fresh odor control technology helps keep the sleeping bag fresh even after prolonged use.
• The knitted fabric offers incredible stretch and freedom of movement in this sarcophagus-shaped sleeping bag liner and fits perfectly on any shape sleeping bag.
  

Weight Mummy Compact Drawcord: 268g Mummy Drawstring: 284g Mummy: 265g Closed dimensions Mummy Compact Drawcord: 15 x 7 x 11 cm Mummy Drawcord: 15 x 7 x 11cm Mummy: 15 x 7 x 11 cm Open dimensions Mummy Compact Drawcord: 198 x 80 cm Mummy Drawcord: 216 x 80 cm Mummy: 206 x 80 cm Material Thermolite Pro and EcoMade Polyester

EXPLAINED BY PAOLO