Kinder Scientific Restrainers are precision-crafted devices designed to safely and securely hold laboratory animals during behavioral and physiological testing. Available in six fixed sizes, these restrainers ensure proper fit while minimizing stress and movement, promoting consistent results across studies. Constructed from durable, easy-to-clean materials, they are ideal for procedures requiring stable positioning. Currently, Kinder Scientific Restrainers are specifically designed for compatibility with the Startle II system, providing reliable integration for startle reflex and related behavioral experiments.