New in 2019, Red Heart say that Heat Wave can keep you up to 12°F (approx 7°C) warmer when the fibers are activated by the infra-red light in natural daylight.
|Texture:||Plied (3 or more plies)|
|Fiber:||Heat-generating Acrylic (100%)|
|Needles:||5mm (8 US) (6 UK)|
|Gauge:||18 sts / 10 cm (4") and 24 rows|
|Balls:||100g; 181m (198 yds)|
|Care:||Machine wash (30C), Tumble dry (low), Do not iron|