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Number One LaboratoryNumber One Laboratory

  • Handmade to Order

    Please note that manufacturing may take up to 10 days. However, we strive to ship sooner, typically within 3-5 business days.

  • Discreet Shipping

    Orders ship in plain packaging with tracking.

  • All Sales Are Final

    Due to the nature of our products, all sales are non-refundable. However we are committed to your satisfaction. Please contact us with any concerns.

  • Contact Us

    For questions or concerns, please contact us. We respond within 24 hours (Mon-Fri).

-Always practice in the shower first. It's easier to use an STP without pants on and easy to clean up.

-Do not push up from the bottom of the STP Cup- this can warp the cup while in use and cause leakage. Instead, use your legs to squeeze the sides of the cup inwards a little. This will deepen the cup and prevent spillage.

Our STP Skins are lightweight and compressable, STP cup and tube will add bulk and siffness.

-Removing the STP when not in use allows for more comfortable packing.

-Turn the STP cup sideways to compress and reduce profile.

-Choosing pants with a longer inseam/zipper will make packing much easier. Tight jeans with a short zipper are the hardest to pack in.

-The Clip In Waistband Harness allows for the most adjustability.

-The Clip In Waistband Harness offers more flexibility for placement and adjusting. Available in both adjustable and fitted. The adjustable harness is a practical solution allowing for size discrepancies, but it does have one small metal slider. The fitted Clip In Waistband Harness has no metal parts, however, you must ensure that it is measured to fit your waistband including the width of the prosthetic you intend to use.

-The Sling Shot Harness secures snugly around each thigh and holds your STP Skin in place between the legs. The Sling Shot Harness is low profile with no waistband, and is also available in fitted or adjustable sizing. It holds the STP Skin securely in place but offers less movement for adjustment.

Our products are made from a strong and flexible platinum silicone that does not tear when using the Clip In Harness. We can not guarantee that made from other materials will not tear when using the Clip In Harness.

We sell our STP Tubes in 2 lengths, 6 inches and 12 inches. Most people will need to cut their tube to fit. If using with an STP Skin, your STP Tube needs to be atleast as long as the shaft. The rest of the Tube length will depend on the distance from the front of your trousers to approximately the placement of your urethra. All bodies are different. If you're not sure we suggest buying the larger tube and trimming it to size once you can experiment in person with it.

In order to make our products customizable to every body, we use a premanufactured silicone tube which can be trimmed to fit by each unique user. The tube is made of a semirigid silicone and may be cut with a regular pair of scissors or a sharp knife.

We recommend using a ruler to get an accurate sense of the measurements listed for our Cup sizes. You may also want to use a ruler to measure from the front of your body to the desired point of comfort.

Our Platinum Silicone products may be washed in warm soapy water. To sterilize they may be boiled for two minutes or washed in a mild bleach solution. To remove odor, try soaking in a denture cleaning solution overnight. Always allow to dry completely before storage. Powder with corn starch to prevent chafing as needed.

Our harnesses may be hand or machine washed. We recommend air drying as machine drying will reduce the life and strength of the elastic.

We use Platinum Silicone in all of our silicone products.

The STP Tube is a premanufactured silicone semirigid tube.

Our harnesses are made from a thick elastic that is plush on the inside.

Our Clips are hard plastic and adjustable sliders are metal with an enamel coating.

Due to the nature of our products we do not accept returns or refunds. However, if you have any problems with your order please contact us.

Please check out our Refund Policy at the bottom of our page for more information.