DURASMASH shuttlecocks are manufactured to the highest standards and are designed to have the best performance, durability and consistency. We only use natural goose feathers like ones used in international competition and competitive training. DURASMASH shuttlecocks are designed with similar flight and grading with the top brands of shuttlecocks in mind. DURASMASH is a growing brand in the badminton community. We are popping up in Badminton Pro Shops and Badminton Gyms all over the Bay Area and growing. Trusted for our durability and performance, badminton enthusiast are able to enjoy our products to the highest degree both recreationally and competitively. DURASMASH Master Shuttles DS-50 - Highest grade goose feather shuttlecock great for tournament style feeling and competitive play. Sending Out The Freshest Shipments of DURASMASH shuttlecocks guaranteed! Always in stock. Tips: To make the Durasmash DS-50 shuttlecocks more durable, please humidify all shuttlecocks 24-48 hours before usage. The foil lining could keep the humidity inside the tube for a week or more. This will help increase the life/durability of the shuttlecock by up to 50% or more.