Our Potty Training Kit includes:(1) Potty Training Progress Chart (8.5 x 11")(1) Potty Training Completion Certificate (8.5 x 11")(1) Progress Marking Sticker Sheet (4.75 x 6.25")(3) Bonus Reward Sticker Sheets (4.75 x 6.25")Most sticker liners are difficult to recycle and are unable to be recycled through curbside recycling. Our stickers are printed on Zero Waste release liners. These liners are made from 100% Post Consumer Recycled Content and are curbside recyclable with other paper waste.The Potty Training Progress Chart and Completion Certificates are printed on 100% Recycled cardstock for durability and long lasting memory book preservation.