18cm Firm Spring Mattress in a Box

Engineered for Balanced, Breathable Support – The Bonnell Spring Mattress Tired of mattresses that sleep too hot or lack lasting support? Our spring mattress combines a durable Bonnell spring base with dual-layer comfort foam to deliver the ideal blend of stable support and medium-soft cushioning, offering cooler, more aligned sleep night after night. **Why You'll Love It:** - **Stable & Adaptive Comfort** – The supportive spring base and plush foam layers work together to relieve pressure, align your spine, and adapt to back, stomach, and side sleeping. - **Cool & Breathable Design** – Breathable fabric paired with an open Bonnell spring structure promotes continuous airflow to help regulate temperature and reduce moisture buildup. - **Easy Unboxing & Setup** – Arrives in a compact box. Simply unroll, allow 72 hours to expand fully, and enjoy – no assembly needed. - **Durable & Trustworthy Build** – Built with high-resilience springs and premium comfort foam for reliable, long-lasting performance year after year. **The Right Fit For:** - Sleepers seeking a balanced, medium-soft feel with strong support - Those who want a cooler, more breathable alternative to all-foam mattresses - Anyone needing a reliable mattress for the master, guest, or dorm room - Buyers who value convenience, from delivery-in-a-box to effortless setup