Featuring the same thermoplastic elastomer infused with mineral oil, the gel cushions the limb and provides protection from sheer, impact, and abrasive forces. The liner’s exterior fabric is abrasion-resistant and increases the durability around trim lines. The Alpha Classic Gel has been thoroughly tested for skin reaction and received ‘No reaction’ scores. The Alpha Classic Pediatric Locking Liner is designed for use with a shuttle lock and 1/4 x 20 threaded pins.