Ponchos from thetopdogpetstore offer a simple, easy-to-wear option for your dog. This listing is for the Standard option, and the available size noted is Size 9.
The slip-on design means I'm not wrestling with velcro straps before every walk, which my impatient dog appreciates. Size 9 turned out right for my 60-pound mix, and it stays put even when she shakes off after coming inside.
Size 9 fit my dog perfectly with no adjusting needed, and the velcro-free design means no fussing with straps in the rain. It's stayed put on our walks so far.
The poncho slips on in seconds, which is perfect for surprise rain showers, but the size 9 runs slightly snug on my stockier dog. He stays dry and doesn't fuss with it, so overall a solid buy for the price.