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Form Function Llc

Form Function Slingshot STP Harness

Form Function Slingshot STP Harness

Regular price $41.00 CAD
Regular price Sale price $41.00 CAD
Sale Sold out
Shipping calculated at checkout.

This harness has been designed by Form Function to work with their wearable STP devices - the Model A and Model D. 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"

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Customer Reviews

Based on 7 reviews
Poor Quality

For the cost, I do not feel it worth it. When it came, it already had strings from the elastic that I needed to trim. After a few wearings, the second hole through which the scrotum passes through had ripped and widened. The quality of the materials used is just very poor. I bought it to use with the Form Function STP. I am currently looking at other products to replace it.

Great for a packer

This is technically for an STP, I use it for just a plain packer (the Pierre). I feed the shaft through the top hole of the harness, similar to the how to use directions for an STP, and it holds the packer well. It holds the position on your body quite well also. The thing that took me a while to figure out is that you wear this harness like a G-string. I actually really like that on a sensory level because "boy" underwear feels like nothing

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.

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!

Fits good

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