Moisture management:component encourages wicking and minimal drying.Warmth:HIGH: brushed interior for warmth.Ecodesign:We have reduced environmental impact by dyeing the thread before weaving it. What is the fit of the JUNIOR BL 100 base layer bottoms?: The JUNIOR BL 100 thermal base layer provides a REGULAR fit. It is a classic straight cut that adapts to all body shapes. What are the benefits of Polyester?: Polyester is the most-used fibre for base garments because it is relatively inexpensive and offers excellent performance in various respects, and especially because the fibres can be knitted to obtain a very lightweight and durable fabric. It actively absorbs moisture but does not dry particularly well when wet.This product is repairable: We commit to repairing your product free of charge for the duration of the warranty. Whatever it is, fixings, seams, etc. This service is offered in your usual store. However, if we can't repair your product (production defect), we will exchange it or reimburse you.