Top Grade Rubber Synthetic 2 layers WT. 370-400 GMS Latex Bladder with butyl valve
Top Grade Rubber Synthetic 4 Layers Underlining Official size as per IRB Specifications WT. 440-450 GMS High Air Retention Bladder
Top Grade Rubber Synthetic 3 Layers Underlining Official size as per IRB Specifications WT. 440-450 GMS Latex Bladder with butyl valve