Sturdy Iron Construction for All-Weather Durability: Crafted from robust iron, the heart-shaped nest frame stands up to rain, wind, sun, and snow with ease. It delivers long-lasting stability and weather resistance, providing a safe, secure shelter for birds in every season. A durable, practical addition to any garden or yard, it won’t warp, rust, or break down even with prolonged outdoor exposure. Refillable Design for Effortless Nest Maintenance: This bird nesting heart set takes the hassle out of supporting backyard breeding: each kit includes a heart-shaped hummingbird nest frame and a bag of 80g (2.8oz) nesting material. When the old material is worn out or soiled, simply swap in a new bag to instantly refresh the nest—keeping a cozy, welcoming shelter ready for new feathered visitors year-round. Ideal Size for Versatile Bird Accommodation: Measuring 20×20×3cm (7.87×7.87×1.2in), this nest offers ample space to accommodate a variety of small to medium bird species. Adult birds can nest and raise their chicks comfortably, with enough room for movement without feeling cramped—helping birds feel safe and at ease in your outdoor space. Soft Jute-Cotton Filling for Bird Comfort & Safety: The nest is lined with a thick, plush mixture of jute silk and cotton that creates a warm, cozy nesting environment. This gentle filling supports birds’ natural nesting and breeding behaviors, shielding eggs and chicks from cold and injury while fostering a healthier habitat right in your backyard. Built-In Hook for Easy, Stable Hanging: Equipped with a sturdy built-in hook, the nest can be effortlessly hung from tree branches, garden hooks, or patio railings. The secure design prevents the nest from falling or swinging excessively, protecting birds from harm and ensuring their shelter stays stable even during windy days.