Cold Resistant Boost: The hamster tunnel provides insulation with ultrasoft polyester, helping small animals stay comfortable in cooler environments. The cavestyle design adds natural security for safety and wellbeing. Fluffiness Preserved: The tunnel is machinewashable and uses antideformation tech with resilient PP cotton filling to maintain fluffiness and shape for consistent usability. Comfortable Resting Solution: An external disturbance blocking design creates a calm, uninterrupted space, supporting interactive play and relaxations on the pet bed resting pad. Daily Activity Safety Assurance: Reinforced lining and smooth rounded edges, along with invisible stitching, keep threads hidden during use for safer, worry activity. Specifications and compatibility Materials: Ultrasoft polyester; filling: PP cotton; design features: external disturbance blocking and reinforced lining; stitching: invisible for clean appearance; edges: smooth rounded. Care: Machine washable for easy maintenance. Safety: Reinforced lining and rounded edges reduce risk of injury during use. Compatibility/Size: Sized for hamsters and similar small pets. Use scenarios Winter warmth and security: Place the tunnel in the cage or play area to provide a warm, secure hideaway that helps your pet feel safe in cold rooms. Playtime and rest integration: Combine with a pet bed resting pad to encourage exploratory play and peaceful downtime in a dedicated resting space. Easy cleaning routine: When soiled, remove and machine wash to restore fluffiness and keep the tunnel inviting.