Stealth Royal Blue Mallet Putter Cover. This oversize mallet cover is designed specifically for 2-Ball Mallet Putter and is guaranteed to fit both right and left handed clubs. Easy secure Velcro closure. Design allows the covers to mold and fit the club shape the more the cover is used. These putter covers are available in 10 colors: Pink, Purple, Black, Navy Blue, Wasabi Green, Red, Flame Orange, Yellow, Royal Blue and Tweed Silver.