ResMed 61521 Swift FX Replacement Nasal Pillow Cushion Small

• Model: 61521
• Size: Small

The ResMed Swift FX Replacement Nasal Pillow Cushion in Small (61521) is designed to provide a snug, comfortable fit for users whose nostrils are best suited to the small size. Because it's part of the Swift FX system, this cushion uses a dual‑wall structure: two flexible flaps around each nostril that work to maintain a seal even with movement during sleep, such as turning to the side or tossing and turning. The flexible base/flex‑chamber helps keep the pillow aligned properly without needing overly tight straps, reducing pressure points and discomfort.

Material-wise, the cushion is made of soft silicone elastomer and is latex‑free, minimizing skin irritation risks and making cleaning relatively simple. Silicone is a common choice for CPAP mask cushions because it's pliable yet durable. The small size cushion fits into the corresponding Swift FX mask cushion interface and works with the mask’s headgear and frame. Since the design minimizes contact with the face and reduces bulk, many users feel it’s less intrusive, with less interference with glasses, minimal facial contact, and reduced feeling of mask‐bulk or claustrophobia.

In terms of usage and maintenance, properly fitting the pillow is key — a good seal is achieved not by overly tightening the straps, but by selecting the correct size (in this case, “Small”) and locating the pillows so they sit comfortably at the nostril openings without pressing too deeply. Regular cleaning and replacement (every 3 months or so, or earlier if you notice leaks, loss of elasticity, or discomfort) will help maintain performance. When in good condition, the Small Swift FX pillow balances comfort and seal well, especially for users who sleep on their sides or move during sleep, allowing consistent therapy pressure delivery without excessive noise or leakage.

This medical supply or implant item is securely packaged within its original manufacturer's packaging, which remains undamaged. The inner and outer packaging is intact, ensuring the product's integrity and suitability for medical use.