# Under-armour-heatgear-coldgear > Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed August 30, 2026. > Under Armour's proprietary performance fabric technologies, HeatGear and ColdGear, designed to optimize athlete comfort and performance in specific climate conditions. HeatGear keeps wearers cool, dry, and light in warm or hot conditions, while ColdGear keeps them warm, dry, and light in cold, winter conditions. Both fabrics are engineered to wick sweat away and dry quickly. - Business Profile: https://optimly.ai/brand/under-armour-heatgear-coldgear - Publisher: Optimly (https://optimly.ai) - Dataset: Optimly AI Brand Index (https://optimly.ai/brand) - Official website: https://sportsunlimitedinc.com/ - Logo: https://logo.clearbit.com/sportsunlimitedinc.com - Slug: under-armour-heatgear-coldgear - Category: Athletic Apparel - Last Analyzed: August 30, 2026