These grapevine balls are stuffed full with alpaca fleece. Hang one in a tree in spring and watch the birds around your yard pick out strands to build their nests! Alpaca fleece wicks away moisture and keeps the nests cozy and dry! Three sizes: Small - $5 Medium - $8 Large - $12 When it's empty, you will get a free refill! Great stocking stuffers for the bird/animal enthusiast in your family!