Sleeve that fits 10.5 with back cover + Smart Cover AND ASK

Hey all, I'm heading on a trip through Latin America and have gone iOS only. I'm looking for a sleeve that can keep everything together. I interchange my Smart Keyboard and Smart Cover often. The 10.5 inch also has a clear plastic back cover from MoKo. Any recommendations? I've used Etsy in the past for felt sleeves but I want something more durable.