The term ‘breathable’ refers to a material’s ability to allow air and moisture vapour to pass through more readily than non-breathable fabrics. While this can support heat and moisture management, it does not prevent overheating in all conditions.

In very high temperatures – particularly when combined with factors such as direct sun, humidity, restricted airflow, underlying health conditions, or individual variation between horses – overheating can still occur even when a breathable rug is being used. For this reason, rug use should always be assessed on an individual basis. Horses should be closely monitored during periods of extreme weather, and rugs adjusted or removed where necessary to suit the horse and conditions.