1. resistant to fading, damage, or deterioration caused by sunlight

Examples

• The sunproof fabric maintained its bright colors even after years of outdoor use.
• We chose sunproof paint for the deck to prevent peeling and fading.
• The manufacturer guarantees that their sunproof awnings will last for decades.
• Sunproof materials are essential for outdoor furniture in sunny climates.
• The new sunproof coating protects the car’s interior from UV damage.
• Gardeners prefer sunproof labels that won’t fade in direct sunlight.