LiveCoco's Bamboo Philips Sonicare Compatible heads are made from compostable bamboo, plant-based bristles & insert inside. So, they are an easy Eco-Friendly Swap, 100% Compostable & Recyclable via your local recycling system. ♻️ Sustainable Bamboo Body 🌿 Plant-based bristles (compostable, made form castor beans) 🌱 Biodegradable Kraft paper packaging (100% Plastic-Free) 💪 Durable & Deep Clean bristles (up to 3 months) ✔️ Free from BPA, Parabens, Phthalates, SLS & Palm Oil 📭 Post Box Friendly fits through your letterbox Compatibility (IMPORTANT): - All Philips models that start with HX3, HX6, HX8 & HX9