Ready to take your Boner Kit further? The Sport Fucker Boner Expansion Pack adds two more super-stretchable square donuts to your collection, giving you four total when combined with the original kit. Whether you’re layering up for extra sensation or mixing black and red for a bold custom look, this expansion pack hands control back to you. Designed for adventurous couples who love to experiment, it’s the upgrade your nightstand has been waiting for.

Material & Construction

• Made from body-safe TPR — super stretchable yet firm enough to stay in place
• Stackable square donut design compatible with the original Boner Kit
• Ball Ring Exterior: 1.3 × 1.3 in. | Ball Ring Interior: 0.9 × 0.9 in.
• Available in two colors — black and red — so you can mix and match for a personalized look

How to Use

• Stretch the square donut ring over the shaft and behind the balls for a snug, stimulating fit
• Stack multiple rings from your Boner Kit and this expansion pack to customize intensity
• Use a water-based lubricant for easier application and removal
• One-size construction accommodates a wide range of wearers

Care & Cleaning

• Rinse with warm water and mild soap after each use
• Pat dry and store away from direct sunlight and other toys
• Avoid silicone-based lubricants, which may degrade TPR over time

Discreet Shipping

Your order ships in a plain, unmarked box with no adult content visible on the outside — because what’s inside is nobody else’s business. Orders $69 and up ship free. Discreet Toys is proud to be veteran-owned and committed to your privacy every step of the way. Explore more in our Couples Pleasure collection.