Dual-Dimensional Prototype for Soldier Pillow

I'm seeking a skilled designer to create a digital prototype of a specialized pillow for soldiers. This pillow needs to be:

- Waterproof
- Durable
- Comfortable

The prototype can be in 2D, 3D, or both. I have a concept design ready to share.

Ideal Skills and Experience:
- Experience in product design, especially in 2D and 3D modeling
- Knowledge of materials that enhance durability and waterproof features
- Strong understanding of ergonomic design for comfort

Please note, I need assistance in determining the dimensions of the pillow.