Hi all - new to this forum and hoping someone can help advise me on a few questions related to the Oasis sandals, which I'm planning on buying as a grad gift to myself! Sizing: I wear a US 8 street shoe, a 39 in designer heels (e.g. Jimmy Choo), and have a slightly wide toe box (not wide enough to buy wide versions of shoes, but uncomfortable in some shoes that run narrow). The Hermes site says I should buy a 38 but I'm skeptical - any advice? Color: I'm leaning towards black because I feel like they'll go with more but the brown ("gold") is so pretty! Any advice on how to choose? And finally, do they slide off? I usually shy away from mules/sandals without a little big toe separator because I feel like I'll just walk straight out of them. Has this happened to people? Thanks so much for any advice you can give!