ESB means “extra slim ball” which makes this point type safe for knits and the small point will glide easily through most woven fabrics, eliminating the need to change between regular ball point needles and sharp point needles. This high-quality chrome-plated needle has a light blade size, making it ideal for lightweight knit or woven materials, including microfiber and moisture-wicking materials. Also suitable for use with fine lightweight threads like size 60.