From the brand

Light up Party Favors: You will receive 25 pieces of Halloween flashing light up jelly rings. Just press the switch, you can see the lights of the ring keep flashing and switch between different colors, strengthening the atmosphere to an extreme
Quality Silicone Material: The glow rings for adults are made of quality rubber material, which has good elasticity, soft and reliable. Each ring is waterproof, durable and easy to wear. All flashing rings are bright enough to attract people’s attention
PERFECT PARTY ACCESSORIES: Each glow in the dark rings is individually packaged, suitable for birthday party, LED party, Christmas, Halloween and more, also suitable for party favors, Easter egg fillers, Halloween goodie bag gifts, Christmas stocking fillers
Join Your Party: these flashing rubber rings are ideal props for a night out. You can use them at bachelor parties to make friend more joyful, and you can use them in Halloween costumes to make your image stand out
Rings measure approximately 1.6 inches and are soft that easily stretches to fit any sized finger. A colorful assortment of jelly rubber rings with bumpy texture & flashing LED lights are a must have. Note: the product may have a slight rubber smell, which can be eliminated after ventilation and drying