Green/Yellow 2-Piece Set: Things 4 Strings Bow Hold Buddies, Award-winning Violin/Viola Teaching Aid Flexes thumb to touch intersection of frog and stick Supports curved pinky Postions index finger to rest on bow Fingers still contact bow in all the customary places Universal Fit -- for child to adult hand sizes 1 Green/Yellow <span class="a-text-bold">Frog Frog</span> thumb/index finger shaper for Violin/Viola, <span class="a-text-italic">plus</span> 1 Green/Yellow <span class="a-text-bold">Hold Fish</span> pinky support for Violin /Viola Positions and supports all fingers of the right hand Fingers still contact bow in all the customary places Adjustable Fit to help beginning bow hands aged 3 - Adult Fits all bow sizes Made in the USA Manufactured of the finest medical grade silicone rubber No latex allegery concerns Durable and Dishwasher Safe