Babolat VS Team BT7 Tennis String (12m) The newest protective coating improves the ever popular king of natural guts making Babolat VS Team BT7 one of the most sought after strings around. Improving on the previous Thermogut coating, the new BT7 treatment claims to increase longevity by up to 15%, increase durability by 25%, and improve the resistance to humidity by nearly 60%... Size - (See Description) | Color - (See Description) Authorized Babolat Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.