Fat Boy Original Ultra Fat Sheath 5.5

Fat Boy Original Ultra Fat Sheath 5.5

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Fat Boy Original Ultra Fat Sheath 5.5 by Perfectfit

Meet the Fat Boy™ collection: classic Fat Boy™ Thin, Fat Boy™ Ultra Fat (formerly Fat Boy Sport), plus two fresh textures—Checker Plate and Micro Rib. Each comes in sleek vertical packaging, ready to enhance your play.

The Checker Plate delivers intense stimulation for the receiver, while Micro Rib offers a gentler touch. Both textures come in three sizes to fit your needs.

We’ve shifted from calling these “extenders” to “sheaths”—a category we pioneered. The Fat Boy™ was the first soft, stretchy sheath designed to boost pleasure for both partners, sparking an extender revolution. Ten years on, it remains a top seller and was named one of Men’s Health’s best sex toys of 2017.

Crafted from our signature SilaSkin™—a soft, silky, stretchy TPR/Silicone blend—the Fat Boy™ feels ultra-real. It adds girth for the receiver and acts as a stroker for the wearer, thanks to interior nubs and ribs. Its closed tip and thick scrotum loop keep it secure while adding a pleasurable tug during use.

Customer feedback is clear: women love the orgasm-boosting girth, men enjoy the stroker sensation solo or with a partner, and anal bottoms appreciate the daring yet comfortable size. Women also use it as a manual masturbator over the hand.

Sizes & Girth Added:

  • CS-02C-N Fat Boy™ Ultra Fat Sheath 5.5” - Medium (adds 1" girth)
  • CS-01C-N Fat Boy™ Ultra Fat Sheath 7” - Large (adds 1" girth)
  • CS-05C-N Fat Boy Thin Sheath 5” - Medium (adds 0.5" girth)
  • CS-03C-N Fat Boy Thin Sheath 6.5” - Large (adds 0.5" girth)
  • CS-20C Fat Boy Checker Plate Sheath 5.5” - Medium (adds 0.7" girth)
  • CS-21C Fat Boy Checker Plate Sheath 6.5” - Large (adds 0.7" girth)
  • CS-22C Fat Boy Checker Plate Sheath 7.5” - Extra Large (adds 0.7" girth)
  • CS-25C Fat Boy Micro Rib Sheath 5.5” - Medium (adds 0.7" girth)
  • CS-26C Fat Boy Micro Rib Sheath 6.5” - Large (adds 0.7" girth)
  • CS-27C Fat Boy Micro Rib Sheath 7.5” - Extra Large (adds 0.7" girth)

Care: Clean with mild soap and water.

Safety: Not a contraceptive or condom substitute. Use only with water-based lubricants. Not compatible with latex products; store separately.

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