The concept of thermal insulation using neoprene:
By trapping a thin layer of water around the feet, the neoprene boot works in two ways:
1. The trapped water inside the boot gradually warms up
2. Heat transfer from the body decreases.
The boot and the thin covering of water form a layer of insulation.
Neoprene is a closed-cell elastomeric foam with trapped nitrogen bubbles that have insulating properties.
The design of the DG500 dinghy/catamaran neoprene boot is intended for cool and cold weather:
The Tribord DG500 neoprene boots are made of 100% neoprene (thickness: 5mm) to ensure optimal thermal insulation.
All seams are sewn together with strong thread for this particular type of fabric and are glued to prevent water getting through the seams.
A neoprene strip is sewn under the zip to reduce the cooling effects of the water that may get through underneath.
Tips for storage and maintenance

Hand wash

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean
Storage tips
Prior to long-term storage, rinse with fresh water (to remove salt that could deteriorate the neoprene and damage the zips). Dry and store away from sunlight and moisture.