I need a new one. I just bought one that H told me it reminded him of a diaper bag :? I use a LLL yoga bag as a diaper bag, but I thought the same think initially as well but thought it would work. Its going back.
I have an LLL gym bag, but it's more of a duffel style vs the diaper bag looking style. I like it, but it's not super roomy. Works for me because I live in a warm weather climate and rarely have to cart around more than a tank and short and shoes/socks. But it may not be roomy enough if you need to carry around a jacket, running tights, etc.
I use the Longchamp Pliage bag. I specifically wanted something without a ton of pockets on the inside to give myself plenty of room to pile my stuff in there. I use it to haul my gym shoes, workout outfit, water bottle, and cosmetic bag that has my headphones and watch in it. After I change clothes at work, I stuff my work clothes in the bag and head to the gym. I do wish it had an outside water bottle pocket on it though.
I use the Longchamp Pliage bag. I specifically wanted something without a ton of pockets on the inside to give myself plenty of room to pile my stuff in there. I use it to haul my gym shoes, workout outfit, water bottle, and cosmetic bag that has my headphones and watch in it. After I change clothes at work, I stuff my work clothes in the bag and head to the gym. I do wish it had an outside water bottle pocket on it though.
I use a customized TimBuk2 Messenger Bag (size medium, the large is GINORMOUS). I work out before work so I have to get my work clothes in there, toiletries bag, hairdryer, and brush. Everything fits. If I am wearing boots or something tall to work, I just carry my boots in separately.