ConvaTec -Tail Closures are used with the SUR-FIT Natura, Esteem synergy, ActiveLife, and SUR-FIT AutoLock drainable ostomy bags. These convenient ostomy supplies produce a clicking noise when closed to ensure security. Available in straight or curved styles, these tail closures work with a variety of ostomy pouch and drainable pouch systems. ConvaTec provides durable and secure high quality ostomy supplies at affordable prices.