Material and protection: Nylon construction provides durable, wearresistant protection that guards your JBL PARTYBOX320/310 from dust and scratches over time. Custom fit: Specifically designed for JBL PARTYBOX320/310, this cover offers a snug, secure fit that prevents slipping during transport or storage. Lightweight and portable: Soft elastic material keeps the cover light and easy to carry, adding minimal bulk to your setup. Allweather protection: Shields the speaker from dust, moisture and minor impacts, helping to extend the speaker's performance and lifespan. Use scenarios: During transport to gigs or events, to keep the speaker protected in transit. In storage at home, in the studio, or in a vehicle, to maintain cleanliness when not in use. At outdoor performances or rehearsals, where exposure to dust and moisture is more likely.