Like what the other mummy recommended, I have a friend who is using this Sarah Wells Breast Pump bag. She got it as a gift from the colleagues and absolutely loved it. Fits her S1 well and could fit other stuff (can fit her laptop as well, which she sometimes brings to and from work). Looks good too! https://www.amazon.com/Sarah-Wells-Kelly-Convertible-Breast/dp/B0128S0EXY?ie=UTF8&keywords=sarah%20wells&linkCode=sl1&linkId=82d1150cfb06bfeed4207aa1da5e3ab6&qid=1456713739&ref_=as_li_ss_tl&s=baby-products&sr=1-1&tag=beinspibecrea-20
Promo terbesar expert care sudah dimulai, diskon hingga Rp.100.000 sedang berlangsung di shopee, ada juga voucher diskon 100% alias gratis bagi bunda yang beruntung. Buruan cek di https://shope.ee/9UfEMMqqTg (id-15189)
Sarah Wells from http://mamawarehouse.com/product-category/shop-by-brands/sarah-wells/
Try searching "sarah wells" bags. Their bags seem good! I dont own one though
jujube or skip hop seems quite popular too
I used the Kate Spade diaper bag