This is a cock ring sizing system designed to fit without too much pull but with enough restriction to be truly effective.  The Xact-Fit rings are only 0.1 in. (2.5mm) apart in sizing to get rings that would fit perfectly.  They are not too stretchy so the rings are effective but easier to get on and off than a metal ring.

The Play Zone kit contains the nine most used Xact-Fit sizes for shaft rings ball rings and cock and ball rings. Made of a plush soft touch silicone each Xact-Fit ring is premium quality and incredibly strong.  Each ring is stamped with its size. Additional rings can be purchased. The Play Zone comes with a storage cone designed specifically to hold the rings perfectly.  The complete set of sizes available are shown below.  The Play Zone comes with PF Size #11-#19 (1.1 thru 1.9 in. diameter).

Cock rings are made of ultra-soft and squishy SilaSkin. Double over or stack multiple Stackits for more tightness. Use them for extended play or to show off your bulge under your clothes. 

Designed to fit close to the base of the penis and high on the testicles.

The strap’s medical grade silicone snap rings come with 3 snaps on one end and 2 on the other giving the wearer 4 options to find the correct size. Traditionally snap rings are made of uncomfortable hard-stitched leather or rubber and until now have never been crafted from soft touch silicone. Safe with all lubricants completely hypoallergenic non-irritating and compatible with sensitive skin. One size fits most. Measures 8.25 in. long by 0.75 in. wide.

Made of a plush soft touch silicone each ring is stamped with its size to eliminate guessing. Stack the rings for additional fun. Three rings with diameters of 1.7 1.8 and 1.9 in.

This 1.5 in. medical grade silicone snap ball stretcher comes with 3 snaps on one end and 1 on the other giving the wearer 3 options to find the correct size. Traditionally snap rings are made of uncomfortable hard-stitched leather or rubber and until now have never been attempted to be crafted from soft touch silicone. Safe with all lubricants completely hypoallergenic non-irritating and compatible with sensitive skin. One size fits most.
 

Three simple gasket cock rings made of silicone varying sizes (0.75 1 1.25 in.).

The strap’s medical grade silicone snap rings come with 3 snaps on one end and 2 on the other giving the wearer 4 options to find the correct size. Traditionally snap rings are made of uncomfortable hard-stitched leather or rubber and until now have never been crafted from soft touch silicone. Safe with all lubricants completely hypoallergenic non-irritating and compatible with sensitive skin. One size fits most. Measures 8.25 in. long by 0.75 in. wide.

USB rechargeable wearable rabbit vibe made of Lab-tested body-safe True Silicone features flexible ears that tingle and tremble all the way to their tips for targeted clitoral massage. One ring stretches around the shaft and the second stretches around the shaft and testicles giving him a snug and secure isolation fit. Powered by deep rumbling Vooom technology with 10 penetrating vibration functions.

Made of a plush soft touch silicone each ring is stamped with its size to eliminate guessing. Stack the rings for additional fun. Three rings with diameters of 2 2.1 and 2.2 in.

Provides tightness control using a double sliding semi locking ball.

Four varying sized cock rings made of odorless pliable TPE. Suitable to use with all lubricants.

USB rechargeable vibrating cock ring made of soft body-safe SEBS and ABS is powered by deep rumbling Vooom technology with 10 penetrating vibration and pulsation functions. Stretch the ring around the base of the penis or penis and testicles and adjust the motor as you like it. Wear it on top for rumbling clitoral massage or underneath for pleasant pressure with added vibration. Full charge provides 60-plus minutes of power. Waterproof.

USB rechargeable wearable rabbit vibe made of Lab-tested body-safe True Silicone features flexible ears that tingle and tremble all the way to their tips for targeted clitoral massage. One ring stretches around the shaft and the second stretches around the shaft and testicles giving him a snug and secure isolation fit. Powered by deep rumbling Vooom technology with 10 penetrating vibration functions.

Soft leather cock strap with gold multiple snap buttons making it adjustable to allow for the perfect fit. Measures 8.7 by 0.4 in.

USB rechargeable reversible vibrating cock ring made of lab-tested body-safe SEBS and ABS is powered by deep rumbling Vooom technology with 10 penetrating vibration and pulsation functions. Super-stretchy comfort fit makes it easy to wear without tight constriction. Warrior Control finger loop lets users adjust the motor. Or wear the loop as an additional cock ring for a special vibrating boost. Full charge provides 60-plus minutes of power. Waterproof.

USB rechargeable reversible vibrating cock ring made of lab-tested body-safe SEBS and ABS is powered by deep rumbling Vooom technology with 10 penetrating vibration and pulsation functions. Super-stretchy comfort fit makes it easy to wear without tight constriction. Warrior Control finger loop lets users adjust the motor. Or wear the loop as an additional cock ring for a special vibrating boost. Full charge provides 60-plus minutes of power. Waterproof.

The strap’s medical grade silicone snap rings come with 3 snaps on one end and 2 on the other giving the wearer 4 options to find the correct size. Traditionally snap rings are made of uncomfortable hard-stitched leather or rubber and until now have never been crafted from soft touch silicone. Safe with all lubricants completely hypoallergenic non-irritating and compatible with sensitive skin. One size fits most. Measures 8.25 in. long by 0.75 in. wide.

This stretchy enhancement sleeve is a simple way to add a new level of pleasure and sensation to your rod or favorite dildo. Just slide the sleeve over your shaft. Easy to use and stays in place!

• 2 Inch Length x 1.4 Inch Width
• Soft And Stretchy
• Soft Ticklers
• One Size Fits Most
• Made from TPE. Contains no Fragrances Phthalates Paraffins or Latex

This stretchy enhancement sleeve is a simple way to add a new level of pleasure and sensation to your rod or favorite dildo. Just slide the sleeve over your shaft. Easy to use and stays in place!

• 2 Inch Length x 1.4 Inch Width
• Soft And Stretchy
• Soft Ticklers
• One Size Fits Most
• Made from TPE. Contains no Fragrances Phthalates Paraffins or Latex

This man toy is designed with superior materials and production thus increasing both comfort and lifespan. The iconic Boneyard-branded design has a sleek silicone finish and features a superior and durable 3X-stretch. The soft medical grade silicone rings and non-roll design provide a snug fit that both the wearer and his partners will appreciate. Keep you hard longer and stronger. Safe with all lubricants. Measures 30mm (1.2 in.).

Vibrating silicone cockring is designed for the pleasure and stimulation of both partners. Powered by an AG3 button battery that lasts for approximately 30 minutes. Measures 1.77 in. by 0.79 in.

Velvety smooth silicone vibrating ring fits directly against her clitoris. Waterproof with a one-button control. Batteries included. Measures 2.75 in. high with an inner diameter of 1.18 in.

Super-stretchy penis ring features a wider band for a comfortable and secure fit. Made of body-safe silicone it is safe to wear and gives men an effective tool for erection enhancement and longer-lasting sex. Its soft flexibility and 1.25 in. diameter makes it easy to fit and stay put for a more satisfying experience. Durable and reusable ñ simply wash it with soap and warm water and keep it in a cool dry place.

These man toys are designed with superior materials and production thus increasing both comfort and lifespan. The iconic Boneyard-branded design has a sleek silicone finish and features a superior and durable 3X-stretch. The soft medical grade silicone rings and non-roll design provide a snug fit that both the wearer and his partners will appreciate. Keep you hard longer and stronger. Safe with all lubricants. Package includes five rings: 30mm (1.2 in.) 35mm (1.4 in.) 40mm (1.6 in.) 45mm (1.8 in.) 50mm (2 in.)

Lasso design with a sliding semi-locking ball allows user to adjust tightness. 100% silicone.