Dial in your ideal fit with the AdjustFit Inserts 3 Pack from Oxballs. These clear, flexible inserts let you personalize the inside length of your favorite cocksheath—so your experience feels just right, every time.

Each insert subtly shortens the interior shaft, blending seamlessly with your body for a discreet feel that’s all pleasure, no distractions.

WHAT MAKES IT THROBBS-WORTHY

• Gives you a custom fit with every use—add one, two, or all three as you please.
• Clear Flex TPR material blends in visually and moves with you.
• Designed to make your sheath feel like a natural extension of your body.
• Lets you play with confidence, whether you’re feeling bold or just want more comfort.

AUDIENCE FIT

• Anyone looking for a more precise cocksheath experience.
• Ideal for couples or solo play, regardless of size.
• Great for those who value versatility in their pleasure gear.

SENSORY FEEL

• Each insert brings a firm-yet-flexible sensation from base to tip.
• The smooth, rubbery finish disappears inside for a barely-there look.

WHY WE LOVE IT

• Lets you tailor your toy to your mood and body—it’s intuitive and super satisfying.
• Discreet and simple, with a sleek design that maximizes both comfort and sensation.

THROBBS™ SCALE

• Intensity: Adjustable to your preference
• Ease: Effortless to use and swap out
• Discreetness: Ultra-subtle look and feel
• Adventure: Customizable for new sensations

COMMON QUESTIONS BUYERS ASK

• How many inserts come in a pack? Three clear inserts are included.
• Will these work with any Oxballs cocksheath? They’re designed for use with Oxballs sheaths that accept inserts.