The OXBALLS MUSCLE Cocksheath is engineered for guys who want serious size, serious sensation, and serious versatility. Made from OXBALLS’ signature flexTPR™, the MUSCLE sheath delivers a smooth, rubbery, ultra-stretchy feel that molds to your shaft with a deep, suction-like pull. The thick, long outer shaft features a flared, powerful head and a durable flex that adds both length and girth instantly—turning your natural shape into a bigger, harder penetrator.

Inside, MUSCLE is lined with soft ridges that stroke, tug, and massage your shaft as you move, delivering a JO-like stimulation while giving your partner a fuller, heavier experience. The built-in COCKSLING-2 base keeps everything anchored securely in place, gripping your shaft and balls so the sheath won’t slip no matter how hard you thrust.

For maximum customization, OXBALLS includes their ADJUSTFIT bullet insert. It locks into the grooved inner chamber, allowing you to shorten the usable depth for a tighter, fuller fit—perfect for guys who want the sheath to hug their shaft from tip to base. Every stroke becomes deeper, wetter, and more powerful, thanks to the MUSCLE’s thick, stretchy material and suction-like internal pull.

Whether you’re craving more confidence, more intensity, or more size, MUSCLE delivers a thick, smooth, girthy upgrade that feels incredible on both sides of the action.

WHY YOU NEED THE MUSCLE Cocksheath?

The MUSCLE sheath gives you the thrill of instantly becoming bigger, longer, and heavier without sacrificing sensation. Its ridged interior hugs your cock, delivering a wet, sucking stimulation that keeps you turned on and throbbing. For your partner, the added girth and length create a fuller, deeper penetration that amplifies every thrust. This is a toy that boosts confidence, heightens pleasure, and transforms the entire experience for both giver and receiver—pure, raw fun with a thick, powerful payoff.

FEATURES

• Smooth, long, wide cocksheath for added length and girth

• Made from ultra-stretchy, smooth flexTPR™

• Built-in COCKSLING-2 base keeps sheath locked in place

• Ribbed internal chamber for stroking, suction-like stimulation

• Thick flared head enhances penetration and size

• ADJUSTFIT stopper allows customizable inner length

• Soft ridges grip your shaft while stroking your partner

• Strong, durable, phthalate-free, no-scent material

• Safe with water-based, hybrid, and silicone lubes

• Designed for hard play

SPECS

• Length: 9"

• Width: 2" – 2.5"

• Depth: 1.5"

• Main Hole Circumference: 4"

• Shaft Hole Circumference: 3"

• Inner Shaft Length: 5.5"

• Ball Hole Circumference: 3.75"

• Smallest Usable Shaft Circumference: 5"

• Largest Usable Shaft Circumference: 6"

• Weight: 7.7 oz

• Material: flexTPR™

• Made In: China

CARE INSTRUCTIONS

• Wash with warm soapy water after use

• Air dry fully

• Apply lube generously inside before wearing

• Store separately from other toys

• Use breathable cloth storage (pouches or cotton socks)

• Safe with water-based, hybrid, and silicone lubes

• Avoid oil-based lubricants