All NewsOctober 4, 2026

Amazon’s $40 20-foot 100-count waterproof string lights are just $9

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Why we love this deal

String lighting is useful for more than just the Christmas tree or front yard. They add cozy lighting to the patio when the sun starts to go down earlier, brighten up the balcony for relaxing with friends, and add festive decoration as we move into the colder seasons. String lights are great because they’re easy to move around and use for multiple different purposes, making them an easy and versatile option. 

The Tw Shine Warm Waterproof String Lights have 100 warm white lights for just $9. They’re easy to set up and span up to 20 feet in length for wide coverage. This deal saves shoppers a huge 76% off the original price of $40 during Amazon’s Early Prime Day deals.

Tw Shine Warm Waterproof String Lights, $9 (was $40) at Amazon

Courtesy of Amazon

Why do shoppers love it?

A useful feature that works well at this price point is the ability to connect multiple sets together. Each string has both types of plugs, allowing you to connect up to five sets together to wrap around the whole house, backyard, or fence, offering flexibility for decorating. It also allows shoppers to upgrade their lighting as they grow. The set has an 18.5-foot light length with a 1.5 lead wire to plug them in, and they feature a steady-on setting and a twinkle setting.  

Related: Amazon’s $13 4-pack of portable LED lights easily clip onto canopies

The lights are IP44 waterproof, making them suitable for both indoor and outdoor decorations. They’re light enough to wrap around your canopy during weekend camping trips, or line your back deck. They also work on trees, bushes, wreaths, and roofs, making them extremely versatile. The package includes two replacement bulbs, two flashing bulbs, and a spare fuse for replacements, offering easy-to-change bulbs if they burn out.

Details to know

  • Size: The string is 20 feet long, including a 1.5-foot plug cord. 
  • Bulbs: It features 100 warm white bulbs that can easily be changed out if needed. 
  • Extendable: You can connect up to five sets of lights.

One reviewer wrote, “These lights are bright and beautiful. They look amazing on my balcony.”Another shopper wrote, “They are a warm, bright light. I mixed them with the orange lights for my fall decor. I’m very pleased with the look.”

Shop more deals

The Tw Shine 20-Foot Waterproof String Lights offer 100 warm white incandescent bulbs in a string that can be extended to 100 feet with multiple sets. At $9, they’re a simple option for adding holiday lighting to everything from Christmas trees and Halloween decor to patios, fences, and porches. Shoppers save $31 at Amazon.