The NRS Youth Bill's Wetsuit Jacket can combine with any other wetsuit for increased warmth in the arms and core. Constructed with an extended waist and raised collar to give you superior coverage and increased warmth and comfort. Keeps you warm without the extra bulk Titanium laminate adhesive reflects heat back to your body Durable flat-lock seams lie flat on your skin for greater comfort Heavy-duty YKK zipper provides easy, trouble-free entry Color-coded inner collar for easy size recognition