Why is it detrimental to leave a parachute in the sun?

Leaving a parachute in the sun is detrimental primarily because ultraviolet (UV) rays can degrade nylon, which is commonly used in parachute construction. UV exposure breaks down the molecular structure of the nylon fibers, leading to reduced strength and an increased risk of failure during deployment or flight. This degradation can compromise the parachute's integrity, affecting both safety and performance.

While heat, insects, and moisture are also factors to consider in the care of parachutes, the specific threat posed by UV rays is particularly critical, as it directly impacts the material's longevity and reliability. Regularly checking and storing your parachute away from direct sunlight can help maintain its structural integrity and ensure safe skydiving experiences.