Rubjoy was built around being versatile. With the default case included in every unit and compatibility with Fleshlight Quickshot cases, you’ve got a solid foundation to explore different sleeves and textures. After years of testing, here are the inserts I recommend most — and why one stands above all the rest.
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These GIFs demonstrate rubjoy using different toys and sleeves, including the default clear stroker, a Fleshlight Quickshot, and the Turbo Core (blue one) - with a bit chopped off the top, also the Boost Blow, featuring a mouth entrance, also trimmed down.
The Default Rubjoy Insert
The standard sleeve that ships with rubjoy is no afterthought. It’s designed to maximize what rubjoy does best - swirling, tilting, and gyrating motions that wrap around the shaft and crown of the head in ways hands can’t replicate. Without any modifications, the default insert delivers a uniquely intense, hands-free experience that sets rubjoy apart.
There are also a couple of alternate ways to set it up:
You can let the soft insert extend slightly below the bottom of the case instead of keeping it flush inside. This changes how the sleeve flexes and moves during use, adding a different feel to rubjoy’s motion.
The end rings on the case can be twisted and unscrewed. Removing one (for example, the lower ring while leaving the upper in place) creates extra room to accommodate larger sleeves. This is exactly how I fit the Boost Blow - the insert sits securely while still letting rubjoy move it freely.
The Quickshot Line (Fleshlight)
Rubjoy pairs beautifully with Fleshlight’s Quickshot series. These compact, open-ended sleeves are lightweight, easy to clean, and ideal for rubjoy’s robotic motion.
Vantage – The most popular Quickshot, a reliable all-around choice that remains a best seller.
Turbo Core Quickshot – A newer model with an industrial-look that grips and releases around the head, perfect for rubjoy’s tilt and swirl.
Pulse (my fav but discontinued) – If you can track one down, the Pulse was one of the best open-ended Quickshot sleeves Fleshlight ever made.
Handy Sleeves (With Quickshot Cases)
Here’s a trick worth knowing: Handy brand sleeves fit nicely into Quickshot cases. They’re slightly smaller than rubjoy’s default case, and work beautifully. It’s a great way to add variety.
My Top Pick – Fleshlight Boost Blow (Modded)
Out of everything I’ve tested, for me, nothing compares to the Fleshlight Boost Blow. This is the only full-size Fleshlight insert I use with rubjoy - and it takes a simple mod to make it perfect.
I cut a few inches off the top so it fits snugly into Rubjoy’s default case without wobbling or flopping around. To fit it properly, I also remove the lower end ring on the case (leaving the upper one in place). This gives the Boost Blow the room it needs while keeping it in position.
Here’s why it’s so good in the arms of a rubjoy:
Suspended inner rings that pop and pull over the crown and ridge of the head.
An open mouth design that works perfectly with rubjoy’s ability to tilt left and right, rubbing those internal textures across sensitive spots.
A cavity that traps the head, letting rubjoy’s gyrations and swirls go to work without letting go.
Simply put: the Boost Blow, trimmed and fitted into the rubjoy case, is the best experience I’ve ever had with rubjoy.