- Golf Rubber Duck. - Safe steel metal insert inside weight balanced waterproof floating racer rubber duck. - The originator envisioned this golf rubber duck is to serve as Mulligan Rubber Duck for helping fundraising at golf tournaments, but limit to only 2 or 3. - Size 3" L x 2.75" W x 3" H; Color yellow - Product Safety: Meets and exceed CPSIA, EN71 & Cal Prop 65 Safety Regulations, free of all heavy metals and all 7 Phthalates. - Originator, place and time: Steve S. H. Chen, Fremont, CA in 2001.