Feature:100% pure natural.How to use: Step: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. Stop use and ask a doctor if:Conditions worsenSymptoms persists for more than 5 days.Rash, itching or excessive skin irritation develops.If pregnant or breast-feeding, ask a health professional before use. Description: Item Type: Wormwood Knee PatchSize:5.43*3.74inMain IngredientsWormwood Packing: OPP Quantity:12Pcs(1 Pack) Package included: 12 Pcs(1 Pack) Wormwood Knee Patch Note: 1.Please allow 1-2cm errors due to manual measurement. 2.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.