This version of our original Ribbed Ring has a smaller band cross-section resulting in 33% material reduction, the end result is a stretchier ring with a more gentle restriction. The Ribbed Ring is a customer favourite when it comes to doughnut style rings. The PFBlend in the rings stretches more than most TPR and Silicone rings of the same style. Made of PF Blend a proprietary blend of Silicone and TPR developed to provide superior stretch, comfort, and durability. Safe with water-based lubes wash thoroughly with mild soap and water. Not compatible with latex. Store separately. Perfect Fit Brand Products are sold and intended for use strictly as adult novelty toys for entertainment. They are not intended for medical use and have not been clinically tested. No medical claims are warranted or implied by the use of these products. These products are Phthalate free, do not contain latex, and meet European EN71-3 toy safety standards. The pack contains 2 Ribbed Rings, 1x Medium stretch and 1x Strong RestrictionWashing: Hot soapy water and toy cleanerColour: BlackFlexibility: VeryFor Who: MaleFeatures: Phthalate FreeMaterial: SiliconeBrand: Perfect Fit