Happy 100th Day Of School 2023 T-Shirt, Teachers Students School Shirt, School Shirt For Kids, Unisex 100th Day of School T-Shirt. 100% Cotton, High-Quality Knitted Fabric, Soft Touch With A Classic Fit That Lays Flat. Keep cool and dry with our Happy 100th Day Of School Shirt. Our quick-dry fabric helps evaporate moisture and naturally regulate body temperature. It can be worn alone or as a layering piece adding depth to your wardrobe.