Material : rubberAge Group : AdultsCertification : CEItem Type : Orthodontic BracesThis product may be intended for use by a health care professional use only. The seller may ask you to evidence you are a qualified health care professional entitled to buy and use such products in your country.Feature:these elastics are the highest quality elastic on the market.Every package is checked to assure all cuts are consistent and that the forces are correct.Dental/Orthodontic Elastic BandsCaution :This product contains natural rubber latex which may cause allergic reactions.It should not be used on or by anyone who is sensitive or allergic to latex.Anyone that experiences any adverse reaction to the product ,should immediately discontinue its use and consult a physician.Size & Forces:1/8" , 6.5 Oz Chipmunk3/16", 6.5 Oz Rabbit1/4" , 6.5 Oz Fox5/16", 6.5 Oz Penguin3/8" , 6.5 Oz MonkeyPackage include:1. 100pcs/Pack, 10Packs