Amazon.com: Tulip Permanent Nontoxic Fabric Markers Neon 6 Pack - Large Bullet Tip, Child Safe, Minimal Bleed & Fast Drying - Premium Quality for T-shirts, Clothes, Shoes, Bags & Other Fabric Materials :
Amazon.com: edding 4500 textile marker - neon pink - 1 pen - round nib 2-3 mm - permanent fabric markers for drawing on textiles, wash-resistant up to 60 °C - marker pens for fabric lettering
Neon Fine Tip Fabric Markers - 12 Piece Set | Hobby Lobby | 1431626