B400 undersuit

B400 new design, 2024.

The B400 consists of 3 layers:
Inner fleece with 400 grs 3M Thinsulate and Nylon breathable layer on the outside.
For maximum flexibility there is stretch fleece at the waist and sides.

• Slim fit model
• Fleece inside
• Stretch side panels
• Adjustable braces
• Elastic waist
• Elastic thumb loops
• Elastic foot straps
• Preformed knees
• YKK zipper
• Chest pocket with YKK zipper
• Side pockets with YKK zipper