Optihaler Asthma Spacers, manufactured by Respironics, are Asthma Spacers designed for use with MDI Inhalers. These Respironics Asthma Spacers are ideal for most individuals, because the stair-stepped mouthpiece fits a variety of masks. The bottom of the Asthma Inhaler Spacer is flat for convenience. The anti-static holding chamber is ideal for aerosol medications, because it delivers a consistent dosage every time. These Spacers for Inhalers will help the patient to obtain proper breathing habits due to a high-flow whistle feature. Spacers are available with or without LiteTouch Spacer Masks, which are designed to improve medication delivery. The masks include soft-touch technology that create a comfortable, contoured seal around the mouth and nose. This seal reduces medication leakage and waste, and anyone can use the masks without any special technique. Masks come in three sizes and are made of polycarbonate silicone. Optichamber Diamond Asthma Spacer Features and Benefits Flat Bottom Prevents Rolling Stair Stepped MouthPiece Makes it Compatible with Pediatric and Adult Aerosol Masks Ergonomic Design Anti-Static Chamber Low Resistance Expiratory Valve Can be Dis-Assembled and Cleaned Optichamber Diamond Asthma Spacer Specifications Designed for Use with MDI Inhalers Volume: 140 mL Length: 5.6 Inches Mouthpiece: 22mm Standard Replace After 1 Year One count