DR Strings Hi-Def NEON Blue Coated Medium Acoustic Guitar Strings (12-54) Hi-Def NEON Blue Coated Medium Acoustic Guitar Strings (12-54) DR NEONs are super bright color coated strings that sound clear, bright and musical Players love the bright NEON colors and their remarkable sound Super bright in daylight and under stage lighting, DR NEON is 100% black light reactive and glow strongly under UV lighting NEONs are the first coated string to make no apologies