Loop band around wrist, ankle or belt. Place the pointed tip through the top hole & adjust the size. Fasten by putting the tip through the desired slot on the ban. Allow 10 to 15 minutes to activate When not in use, please replace place in sealable bag. In regions where mosquitos are very active use bands in conjunction with other forms of protection. Effective for up to 120 hours when kept in resealable bag. Suitable for all outdoor activities including swimming.