Based on this product's specifications, here are some alternatives and similar models
Highlander MIL SPEC Hydration Pack 3.0L Olive
Summary description:
The Highlander MIL SPEC hydration pack features a 3.0-liter capacity, designed for reliable fluid intake during tactical operations, hiking, or outdoor activities. This durable hydration system ensures hands-free water access, making it an essential piece of equipment for long-duration missions and demanding field conditions. Its robust construction provides long-lasting performance and ease of use in various environments.