Pro Tour is a durable, light weight, softer flexing liner that is ideal for A/T & telemark skiing. The strategic rear panel increases comfort & range of motion for tour-ability while the optional lace system, alternate tongues & supple cuff offer solid support & responsiveness. All of this works in combination to enhance performance both ascending & descending. This model can be worn out of the box, molded with the home fit kit, or fit by a professional bootfitter. Features Tongue style liner Alternate Tongue options (Stiff or Thick) Medium volume body, high volume sole Flex panel in heel Optional lace system Aegis, Anti-Microbial Lining Treatment