Magnum Elite Ii Leather Boot 780g per boot (sample size) Upper is manufactured from natural leather & features a waterproof Sympatex membrane Heavy duty hardware for additional durability Lightweight composite shank for torsional stability M-P.A.C.T. contoured insole with memory foam for support & out-of-the-box comfort slip-resistant Vibram sole Tested & certified to European Standard EN 20347 for occupational footwear with SRA slip resistance