# Model F FlexSkin Penis Extender Sheath Size 2

## What it is

The Model F FlexSkin Penis Extender Sheath Size 2 is a Shaft wellness product. Positioned for for-him and for-her. Current price: $44.99 (retail value $74.99). In stock.

## Emma's take

FlexSkin liquid silicone feels exactly like you imagine it would.

This is what everyone's been trying to recreate — that perfect give and warmth that makes you forget you're wearing anything at all. Shaft's FlexSkin liquid silicone moves with you instead of against you, warming to body temperature and flexing through every angle. The 6.9" insertable length adds confident presence without the bulk that makes positioning awkward. I keep coming back to how responsive it feels — like it's adapting to you, not the other way around.

## Specifications

- Total length: 8.8"
- Insertable length: 6.9"
- Internal length: 4.9"
- Internal diameter: 1.6"
- Material: FlexSkin liquid silicone
- Features: 100% waterproof

## What's in the box

- 1x FlexSkin penis extender sheath

## Care instructions

- Rinse with warm water and gentle soap before and after each use
- Compatible with water-based and silicone-based lubricants
- Air dry completely before storing in a cool, dry place
- FlexSkin material is durable but avoid sharp objects or excessive stretching

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Last updated: 2026-07-21
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## Frequently asked questions

## How much length does this extender add?

The Model F adds about 2 inches of insertable length beyond your natural size, bringing the total insertable length to 6.9 inches. The realistic taper means the added length feels natural during use.

## What makes FlexSkin different from regular silicone?

FlexSkin is Shaft's proprietary liquid silicone that's engineered to mimic skin's natural give and warmth. It flexes and responds to movement rather than feeling rigid, creating a more realistic sensation for both partners.

## Do I need to be fully erect to use this extender?

The Model F works best with at least a partial erection for proper fit and stability. The internal diameter of 1.6 inches accommodates most sizes while providing a secure hold during use.

## How do I clean and maintain the FlexSkin material?

Rinse thoroughly with warm water and gentle soap, then air dry completely. FlexSkin is non-porous and waterproof, so it's easy to keep clean. Avoid petroleum-based products which can degrade the material over time.

## Can this be used with different types of lubricant?

Yes, the FlexSkin material is compatible with both water-based and silicone-based lubricants. Start with more lube than you think you need — the realistic texture benefits from generous application for the smoothest experience.