yes!!! the second one is exactly what i had in mind! but the first ones i have NEVER seen and would kill to get my hands on one! too bad i'm not certified to buy one....can the second one be purchased? how many minutes would either give before needing a refill? i'm seriously happy with 10 minutes...i just want to freedom of feeling like i have gills....you know...without actuall gill surgery out yet. cuz i'd so be lining up for that. i'm not concerned for speed. just the not having to surface part. i would sit in a chair in the bottom of the pool (worst case scenario) for all i care, so long as i can stay under feeling mermaidy. but if you have details on these 2 designs...please please please tell me more!