Thomas & Friends rubber bracelets. These Thomas the Tank Engine wristbands are made of rubber with the names and silhouettes of Thomas, Percy and James printed on them. Guests will love to look in their treat bags and see these cool rubber wristbands. Three assorted bright colors! There are 4 rubber wristbands per package. Wristbands measure 7/16 inches wide, with a 2 1/2 inches diameter.