Size: 13.1*10cm/Pieces Functions of pain relieving patch: Quickly relieve various pains associated with muscle strain, neck pain, rheumatic arthritis, hyperostosis, knee joint ache, tenosynovitis, strain & sprain, sciatica, fibromyalgia. (necessary for office workers,popular in hotweather and warm areas). (necessary foroffice workers, popular in hot weather and warm areas). Features of pain relileving patch: 1, Quick effect, long time action 2, Good biocompatibility, no allergy and skin irritation 3, Suitable adhesion, paste skin tight, won't stick body hair 4, Good air permeability and water permeability, avoid the skin soakage in a long-term use How to Use: -Clean and dry affected area -Remove the plastic backing from one side of the patch. -Smooth that side over the area where you want pain relief. -As you remove the other half of the plastic backing, smooth the remainder of the patch over the pain area. -Remove from backing film and apply. -8 Hours for each time, 5 times per week for a process.