Compatible With Apple Watch Series 1 38mm Case, Insten [Lightweight Slim Fit] Soft Flexible TPU Candy Skin [Anti-Shock] Transparent Ultra-Thin Bumper Case Cover Compatible With Apple Watch 38mm, Clear Note: Only compatible with Apple Watch 38mm Series 1; Not compatible with Apple Watch Edition Series 2 38mm. Keep your Apple watch protected in style with this TPU bumper. Color: Clear. Material: TPU. Extremely tough and durable. Adds a splash of color and delivers instant, all-around protection from scratches.