BOXING BAG - EMPTY CASING - Trophy Getters® MIL SPEC® - 4FT - BLACKTHE GOLD STANDARD IN HEAVY DUTY GYM BAGS GLOBALLY=MIL SPEC EMPTY CASING Free freight. Just fill with clean rag. Engineered with extra heavy duty, Laminated Ripstop Tarpaulin with Mil spec ballistic stitching & Patent pending zipped lid Features a unique, easy access, patent pending REFILL LID for easy filling of ragfill MIL SPEC Grade, commercially rated boxing bag covered by a 3 year, extended limited manufacturers warranty on workmanship Heavy duty