This promotional product is a "no-brainer" for your next event! Great for promoting education, science, medicine, museums and more, this squeezable brain stress reliever with keyring is a smart investment! Each one measures 2.25" x 1.25" and can be customized with a brand name, logo or message. Get everyone thinking about your company! Use the keyring to attach it to a keychain, tote bag, bookbag, purse and more. This product is not intended for use by children or pets. It may present a choking hazard to children under 3 years of age.