Mid Layer
لایه میانی
An insulating or thermal layer worn between the base layer and outer shell.
UltrarunningTriathlonTrail RunningCyclingRoad RunningSwimmingکراسفیتMountaineeringپوشاک ورزشی
Definition
An insulating or thermal layer worn between the base layer and outer shell. Performance apparel properties depend on the complete textile system, garment construction, fit and environmental conditions. Marketing labels such as breathable, quick-drying or water-repellent are not single universal performance grades unless tied to a stated test method.
Practical use
Choose apparel by weather, duration, intensity and personal comfort; test critical layers before race day. Choose layers for the actual temperature, wind, precipitation and work rate; compare products using stated test data and fit rather than one marketing term alone.
Sources
- Running Clothes: What to WearREI Expert Advice · updated 2025↗