Gore and Strap Waterproof Mesh Trainer Waterproof Adaptive Closure. Dash through playtime in sporty comfort with Skechers GO RUN 400 V.2™. This active kids' design features a 100% waterproof SKECH-TEX mesh and synthetic upper with stretch laces, an adjustable instep strap, and a cushioned comfort insole. Mesh and synthetic upper with paint splash print detail. Stretch laces and adjustable instep strap. Flexible traction outsole. Dash through playtime in sporty comfort with Skechers GO RUN 400 V.2â„¢. This active kids' design features a 100% waterproof SKECH-TEX® mesh and synthetic upper with stretch laces, an adjustable instep strap, and a cushioned comfort insole.