These adorable little critters sure will make for some adorable cards! The Chubby Chum Pals Clear Acrylic Stamp Set by Paper Smooches are made of clear photopolymer and will work with any acrylic block (sold separately). These stamps coordinate with the Paper Smooches Chums Die Set (sold separately). This quirky 4" x 6" stamp set consists of four chums (bird, moose, bear, and crab), three sentiments, and eight supporting images. The approximate sizes for each chum ranges from 1.5" to 2.25".