Waffle and thermal knits have a grid texture (just like a waffle!) that helps retain warmth and wicks away moisture. The weight and content varies, so make sure to check the individual descriptions. Brushed waffle is a bit thicker, warmer and softer. 

-Uses: Tops, pajamas, beanies, etc.
-Care: Wash cold, tumble dry low. Always pre-wash cotton blends.  
-Stretch: Typically 2-way.
-Fabric Content: Varies. Cotton poly or rayon poly blends. May have spandex.