Prepetual is Pirastro's newest string style in recent years, specially designed to cater to users with different tastes and needs. Prepetual strings are a special addition to Pirastro's string collection due to their innovative materials and production methods. Prepetual also has excellent expressive tension and response. It can cope with all changes in strength and can bring out 100% of the user's strength. Some people may say that the sound of Prepetual is relatively simple and lacks depth, but its bright tone and penetration are enough to make it one of the best strings in Pirastro.