Starboard SUP's Welded Rail Technology – featured in our entire inflatable paddleboard range – uses a new & advanced heat-welding process whereby the top and bottom layers of the board are mechanically bonded. Strength: ★ ★ ★ ★ ★ Durability: ★ ★ ★ ★ ★ That means there is no glue used to join the top and bottom along the rails (where leakage can occur) and these joins are now bonded for life – making our boards the most durable on the market! ⓘ Learn more at sup.star-board.com/inflatable-paddlebo