What Lily2 watch strap is gentlest on the wrist?

My wife is considering a Lily2. However we note that my Viviactive 5 leaves very clear marks on my skin. Every hole of the watch strap is a visible, every hole, the features on the watch are visible and the buckle leaves a red spot that is actually painful but I just ignore it. If I tighten the strap more loosely the watch doesn’t measure. My wife has more delicate skin than I. She would like the metrics but a similar strap would be a showstopper for her. Hence the search for a strap that will give metrics but be as gentle as possible on her wrist. Any recommendations would be appreciated.