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Form Function Slingshot STP Harness

Regular price $41.00

This harness has been designed by Form Function to work with their wearable STP devices - the Model A and Model D Sport. A simple vinyl panel securely holds the packer up against the genital area to ensure it stays in place during wear. The straps wrap around the thigh (where the leg meets the torso, approximately where a pair of briefs would end), and are made of an elastic material.

Approximate waist sizing:
XS: 24-28"
Small: 28-32"
Medium: 32-36"
Large: 36-42"
XL: 42-48"

Approximate leg sizing
XS: 14-17"
Small: 17-20"
Medium: 20-24"
Large: 24-28"
XL: 28-32"

Customer Reviews

Based on 2 reviews Write a review

Customer Reviews

Based on 7 reviews
Pat T
A game changer.

Getting this harness for my STP is going to be a game changer. Once you get the STP placed properly in the strap, it sits and holds exactly where it is supposed to, making it much more natural looking. Thank you for the great products. They all help make the transition process so much easier.

Allen Smith
Works Great

I’m still learning how to properly pack, especially with an STP as they’re a bit trickier. But the harness has definitely helped keep it in a more comfortable place and been convenient when I need to use it quickly!


Made a huge difference when it came to confidence when packing and using my STP. Best purchase!

Joe Schreiber

I like it. Holds the store in place(I have one that is from another brand, got mine for like 50 bucks, still works. Just wondering while there are two holes in the black cloth instead of one and both are VERY tiny so I have trouble getting it trough but if I'm patient it's alright. Ones I sticker the shaft through the hole it's wearable and pretty comfortable.

I like these a lot

It doesn't take up much room. Stretchy. Holds stp and my packer in good place. I exercise more confidently my packer is in place without a bunch of extra cloth.