I wasn't sure what size to get. Based on reviews, I got a small (I'm a 34B with normal bras). I think the small will work well if using this for running, but as far as a comfy bra to wear all day, it is a bit tight in the ribcage. I would maybe go a size up.
This crop top is fab - the best I’ve had. Totally supportive but without feeling massively compressed. Highly recommend for small chested runners!
I have bought quite a few sports bras and find them so uncomfortable and gapping at the breast, then I discovered Runderwear, the most comfortable bra ever. I forgot I was even wearing it when out running and also playing Netball, this bra does not having annoying straps and does not dig in, love the Blue colour too.
Soft and comfortable and no chafing at all.
This is my second order of this bra, I tested one before and decided to stay with this model only (no more scars :))
Delivery was also very fast.
Very comfortable bra. Soft material and no sign of chafing after running. would highly recommend.