Affinity is a No. 40 variegated polyester thread. Affinity’s one-inch color-repeats are the perfect touch for when you want to add a little extra pizazz. Customers rely on the optimum strength of Affinity in fast-pace production environments. Stronger thread translates into fewer thread breaks & less machine downtime. Affinity is washable, color-fast & provides superior resistance to abrasion & chemicals. A trustworthy thread you can rely on over the years when longevity matters.