1. Beaches in Blue 💙 and Black 🖤
In the early 20th century, colorfast synthetic dyes did not exist. Any brightly colored swimsuit- red, yellow, or green- would turn into a faded, limp rag after just one dip in saltwater.

The only pigments that held their color were black and dark blue (indigo). Consequently, beaches of that era looked more like a gathering of penguins than a holiday resort.

2. The 1930s Zipper Disaster
When the zipper was invented, it was immediately incorporated into swimwear. A zipper running the full length of the chest was considered the season's hottest trend.

However, reality told a different story:

Metal zippers would heat up in the sun, causing burns on the wearer's chest and back.

Saltwater and sand would cause the fasteners to jam while the suit was being worn.

The impact of hitting the water while diving could cause the zipper to fly open on its own.👅🍎

After a series of such beach mishaps, metal zippers were abandoned in swimwear for decades.

3. How Parachutes Saved the Beach Season
Until the late 1930s, a wet swimsuit took hours to dry. Everything changed with the invention of nylon a synthetic fiber originally created for military parachutes.

After World War II, nylon made its way into garment factories. The fabric absorbed almost no water, dried in minutes, and could easily be dyed any color. It was parachute technology that made it possible to create the lightweight, brightly colored swimsuits that are still used today.