Straw caps have a sealed, dust-proof and splash-proof design,can better avoid dust and splashe, small size and light weight especially suitable for walking,camping,hiking outdoor activities. Made from silicone material, measuring 1.3*1.3 inches, this custom national flag straw stopper. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Portable, durable, practical for daily use.