Seaskin Kids Wetsuits mainly for boys wetsuits, girls wetsuits and toddler wetsuits. Mostly for regular watersports, like swimming, snorkeling, and surfing training or surfing school. The back zip style is most popular. The thickness of Children Wetsuits mostly is 2mm, 3mm. Off course, some thicker wetsuits will be made for winter surfing, like 4/3mm, 5/4mm. That would be more fun with a fantastic wetsuit for water sports.