The Worth Syco Hot Dot ASA Slowpitch Softball uses C-LOK compression to repel moisture, protecting these yellow softballs from rain or other water sources. These official ASA 12" softballs are also designed to help batters hit consistently regardless of the day"s temperature. The bright yellow color of the Worth Syco Hot Dot ASA Slowpitch Softball improves visibility, which is especially helpful during night games.