Dishwasher safe Easily opens and closes when pressure is applied Made from environmentally-friendly material Perfect for users of all ages and users with weak hands Container 1: 100mm x 150mm x 100mm (4" x 6" x 4") Container 1 capacity: 0.75L Container 2: 115mm x 175mm x 115mm (4.5" x 6.8" x 4.5") Container 2 capacity: 1.35L Container 3: 130mm x 200mm x 130mm (5" x 7.8" x 5") Container 3 capacity: 2L