Mace 10% Hot Walkers Mace 1lb walking weights One weight has a built in defense spray unit containing our Peppergard formula. The other weight has a storage compartment to hold your keys and money. Hot Walkers feature foam covered hand grips for confort and elastic straps for support. Each set of Mace Hot Walkers includes a free refill unit. The refill canister contains 45 grams of OC pepper formula and will refill a unit approximately 15 times