The newly released holiday shells for the 2nd-gen Amazon Echo have just gone on sale for $17.99. That’s 40% off their regular price of $29.99. The two styles available are the Red and White Stripes and the Red and Green Stripes. These are official shells that are made by Amazon, so they should be the exact same quality as the default shell that came with your Amazon Echo. The Echo’s outer shell is designed to slide off without the need of any tools, so anyone can quickly swap styles. This is not a cheap skin that goes over the Echo’s existing exterior.