3 mm neoprene.
The foot pockets seams are waterproof due to GBS assembly (glued and blind-stitched): first, the neoprene is glued, then sewn for maximum strength (the sewing needle does not go completely through the neoprene to prevent water infiltration).
An ink zone is printed under the sole to increase boot strength and grip .
Choosing a size
Try them on with your fins. The fit should be as tight as possible.
Certification
These scuba diving boots provide thermal protection and tested by the independent INPP institute (Marseille, France) to validate their compliance with the current standard (EN 14225-1:2017)