Titanium 2 neoprene: reflects the heat back in Smooth-Skin chest and back panels to eliminate wind chill Flatlock durable seam construction Powertex knees for flexibility and durability Great value suitable for all watersports. Size    Age   Height Waist Chest Hips JXS 7-8  4’4” (132cm)  22” (56cm) 26”(66cm)   24”(61cm) JS 9-10  4’7” (140cm)  23” (58cm)  28”(71cm)  26”(66cm) JM 11-12  4’10 (146cm) 24” (61cm)   29”(74cm)  28”(71cm) JL 13-14  5’1” (154cm)  26”(66cm) 31”(79cm)   29”(74cm) JXL 14+  5’4” (162cm)  28”(71cm)  33”(84cm) 31”(79cm)