The Donut is a classic shaped C-Ring to help maintain those long-lasting erections you’ve always dreamed of. Itft.s made from super-stretchy TPE and it is completely phthalate free and body safe. Soft and Stretchable Delays Ejaculation and Prolongs Erection Enhances Size and Thickness Phthalate Free, Body Safe Width/Diameter: 2.25 in. (5.7 cm) Unstretched Inner Diameter: 1.18 in. (30 mm) Depth: 0.6 in. (15 mm)