(Soft Packer + STP) Packing Boxer: What's in the Box and How to Wear It

By Prothèses trans, Packers & STP, Hard | Published: 2026-10-31

Category: Product Reviews

Learn what's inside the (Soft Packer + STP) Packing Boxer and follow a step-by-step setup for comfortable daily wear with a soft packer or STP.

Quick answer

The (Soft Packer + STP) Packing Boxer is a bamboo-blend boxer with front and inner pockets and a 2.54 cm (1 in) O-shaped opening. Wear it by placing your soft packer or STP in the inner pocket, checking the opening alignment, and adjusting the waistband for a secure, comfortable fit.

What the boxer includes and why the materials matter

The boxer is made of 94% bamboo and 6% spandex, which gives it a soft, stretchy feel for all-day wear. The front and inner pockets are designed to hold a soft packer or STP in place, while the embroidered O-opening measures 2.54 cm (1 in) and is positioned for STP use. Because the fabric is bamboo-based, it breathes well and feels gentle against the skin, but it may require more careful laundering than synthetic blends.

Bamboo-spandex blend: soft and stretchy, but avoid high heat when washing or drying.
Two-pocket design: one front pocket and one inner pocket for holding your packer or STP.
O-opening: 2.54 cm (1 in) embroidered opening, sized for STP use.

Soft packer vs. STP: choosing the right pocket

A soft packer is typically worn for a natural bulge and goes in the inner pocket for security. An STP packer needs the O-opening to be aligned correctly so you can use it without removing the boxer. The inner pocket holds the packer close to the body, while the front pocket can add extra stability or hold a different style of packer. Test both pockets with your packer to see which feels more comfortable and secure for your body and daily activities.

Step-by-step packing boxer setup

1. Put on the boxer: Step into the boxer and pull it up to your waist. Make sure the waistband sits comfortably and the O-opening is centered at the front. Check that the waistband isn't twisted and the opening faces forward.
2. Insert your packer or STP: For a soft packer, slide it into the inner pocket. For an STP, place it so the funnel or cup aligns with the O-opening. The packer should feel secure but not tight; adjust until it sits naturally.
3. Check the opening alignment: Look down and confirm the O-opening is positioned where you need it for STP use. If it's off-center, adjust the boxer or the packer's position. A misaligned opening can cause leaks or discomfort—fix it before you leave.
4. Adjust the waistband and fabric: Smooth out any bunching and make sure the boxer sits flat against your body. The bamboo-spandex blend should feel snug but not restrictive. If the boxer rolls down, try a different size or adjust the waistband position.
5. Test movement: Walk, sit, and bend to check that the packer stays in place and the opening remains aligned. Make small adjustments as needed. If the packer shifts, try the other pocket or a different packer style.

Product facts

(Soft Packer + STP) Packing boxer: 94% bamboo and 6% spandex blend with front and inner pockets and a 2.54 cm (1 in) O-opening. The stretchy fabric and dual pockets help keep your packer or STP in place, while the O-opening is sized for STP use.
(Soft Packer + STP) Packing boxer