Get the perfect fit for comfortable and efficient pumping with our BPA-Free Silicone Flange Inserts, specially designed for the Baby Bliss Wearable Breast Pump S39 and S39 Pro. The right flange size is essential for effective milk expression, helping to reduce discomfort and improve pumping output. Crafted from transparent, food-grade silicone, these flange inserts are safe for both mother and baby, providing a soft yet secure seal during pumping sessions. Easy to clean and replace, they are designed for long-lasting use but are best swapped out every 1–2 months for optimal hygiene and performance. Perfect Fit – Helps achieve proper nipple alignment for more comfortable pumping. Safe Materials – BPA-free, made with food-grade silicone. Easy to Maintain – Simple to clean for everyday use. Compatible Models – Fits Baby Bliss Wearable Pump S39 & S39 Pro.