Model E STP - 3"

by Number One Laboratories


This is the absolutely smallest STP out there. Designed specifically for FTM trans youth (ages 8 - 13), this STP is made from 100% body-safe platinum silicone with a powder soft finish. The outer silicone 'skin' has a clean, soft, matte texture which is designed to help reduce chafing and remove that tacky silicone feel.


Number One Laboratory STPs are made from platinum silicone with a soft powder finish. Every model sold is completely handmade using the best materials available and thoroughly checked for quality and durability.


  • Shaft Length: 3"
  • Width: 1.25"
  • Height (from below balls to the top of shaft): 3"


Platinum silicone may be cleaned using hot soap and water, boiling, or running through the dishwasher in the top rack.

Note for first-time users, we strongly recommend that you practice in the shower before attempting to use this STP in public - even if you have had success with other STPs in the past. Every STP is different and requires some getting used to.

Customer Reviews

Based on 6 reviews
Edwin S.

Oh my gosh hey Sunny! I’m 11 and Trans too :) I asked my mom by getting a gift card for tgs and bought the smallest packer I could find. If you want to just straight up tell her though I suggest telling her why it’d make you happier to buy it and would make you more comfortable in your own skin!!


I would start by explaining why you need it (dysphoria, urinals, packing, etc) and then explain to her what it is. You could also write an email if that's easier. It'll probably be uncomfortable, but even if you were cis, she would have seen your penis as a baby anyway.


Yes my mom does know and is very supportive but it was really inappropriate and I think when my mom first looked at it she’ll be like what the hell

Hi Sunny!

Does your mom know you are trans? If not you might need to come out to her first.

Tips on how to ask my mom

Hi i really want to get this but I don’t know how to ask my mom I’m 11 and if you have any tips i would be really happy


Your order will typically ship within 2-3 business days after purchase.

**Our Warehouse is moving which may cause an extra 3-4 days delay in fulfillment and delivery times until the end of August.

Please note that print-to-order apparel items, such as t-shirts, hoodies, etc... require additional processing time and will be shipped separately.


STP, Packer, Harness, Swimwear and Underwear sales are final. They cannot be exchanged or returned due to legal restrictions. Please consult size charts carefully; Sizes vary between brands. It's recommended to get accurate measurements taken by a pal. All other returns are issued as in-store credit only.

International Orders

Please note that for all non-US orders, you may be charged local taxes to retrieve your order.

Additionally, all international sales are considered final. See our Shipping Policies for more details.