Palm of Glove: Our latest addition to our Prime R3 glove is our DURAGUARD™ patch. This patch of hardground foam at the base of the palm is designed to keep foam at the base of the hand where it can wear out quickly and to assure foam is present when distributing the ball. Our Grman made and re-engineered R3 Megasolid™ foam Is the right choice for keepers looking for a palm that is longer lasting and is good on hard grounds and artificial turf. While still being a smooth foam, we have put in additives that make the foam denser, and therefore offers better durability.Backhand of Glove: Super Softi foam with embossed areas to help in flexibility. The Reusch Finger Support™ stays are flexible finger protectors that run up the fingers and the thumb, reducing the chance for injury.Construction: The optimal fit and catching zone provided by our revolutionary Expanse Cut. The Reusch Finger Support™ stays are flexible finger protectors that run up the fingers and the thumb, reducing the chance for injury. Our AirVentSystem™ uses highly breathable Air Mesh material to make this glove more comfortable. The deep thumb notch on the face of the glove includes an elasticized piece below the foam to help eliminate tear out. We also use an elasticized thread throughout the glove to help eliminate tear out. Side mesh vents allow this glove to keep cooler during match play. Thumbflex™.