500 Light Blue Tyvek Wristbands Waterproof Tamper Proof Event Security (70 chars) – "Light blue" often outperforms "baby blue" in UK searches; adds key features. 500 Pcs Baby Blue Paper Tyvek Wristbands Festival Waterparks Security (69 chars) – Includes "paper tyvek" (common synonym) + specific venues like waterparks.
eBay