'YELLOW' Wing Chun Canvas Wall Striking Bag 1 Unit - , (Chinese: ) Sifu-Master, 1 Section Wing Chun Kung Fu Sand Wall Bag with Hanging D-Rings (sold Un-Filled) Wingchun Classic Boxing Sand Bag 'YELLOW' Wing Chun Kung Fu Canvas Wall Striking Bag Solid Steel D-Rings,High quality zipper: This bag has a high quality zipper to ensure that it does not break, rip or leak sand out of the bag. Wing Chun Canvas Wall Striking Bag 1 Unit - , New Iron Palm/Iron Hand (Chinese: ) Sifu-Master , Makiwara Hand Training Sand Wall Bag Canvas Wall Striking Bag 1 Section Wing Chun Kung Fu Sand Wall Bag with Hanging D-Rings (sold Un-Filled) Wingchun Classic Boxing Sand Ba Supplied Empty...Reinforced seams: The seams on each side of the bag are reinforced on the inside and double stitching. This guarantees that the bag will not bust or leak Iron Palm Hand Training,Protective zipper flap: zips has a protective flaps to make sure the zips are not damaged against the wall. This protects your wall and the zipper.