Coolsleeves™ are extruded PVC coils designed to be wrapped around soft vinyl and thin wall tubes, to eliminate tube kinking and flattening in medium to sharp bend areas.

The advantages of Coolsleeves™ coils are multiple:
1. Performance: 
Coolsleeves™ coils do not restrict flow rate compared to internal springs
2. Reliability:
Coolsleeves™ coils completely eliminate flattening of the tubes over time
Coolsleeves™ UV reactive coils are a safe alternative to UV reactive coolant dies and prevent the pump failures caused by these dies.
Coolsleeves™ coils allow to bend soft vinyl and Tygon tubing at sharp radii without kinking. The sharpest possible radius is achieved by spacing the coils close to each other (3/16"):
Minimum bending radius for 1/2" Coolsleeves is 1.25"
Minimum bending radius for 5/8" Coolsleeves is 2.5"