Specification:  Soft material is harmless to your body.  Granule floating point design, which is more powerful to massage testis.  Lock sperm and stimulate penis at the same time.  Thread design, prevent sliding.  Lock penis to achieve delay ejaculation.  Type: Delay Ring  Size: One Size Fits Most  Features: High Elastic, Soft Material, Sex Toy, Portable Design,  Double Ring Big Ring Diameter: 3.6cm/1.42 Big Ring Thickness: 0.8cm/0.31 (Approx.)  Small Ring Diameter: 2.3cm/0.91 Small Ring Thickness: 1.1cm/0.43 (Approx.)  Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.  Package Includes: 1 x Delay Ring