5/4/3mm Wetsuits with and without hoods. 5/4/3 wetsuits combine three different neoprene thicknesses. These wetsuits are typically sealed with a glued and a blind stitch, some of these suits can have welded seams. These wetsuits often have features like lined lamnets that can be heat retaining & water repelling. Often these wetsuits have water barriers and special features at the wrists and ankles. We recommend wearing Boots, Gloves, Hoods and Layers. There are also heated layers you may want to explore.