Ay oo, normal lang yan lalo na kung bagong sapatos pa! Yung "putok" na tunog parang creaking, nangyayari usually kapag ang materyales ay umadjust pa lang sa movement mo, or minsan ang sole at upper part ay kumikislap pa sa isa't isa habang tumatakbo ka. A few of us tried wearing them around the house muna for a few hours before going out para ma-soften ang materyales, or you can try putting some baby powder inside to reduce the friction, honestly super helpful yan! Kung after a week of wearing it palaging may tunog pa rin or nakakagambala na, check the stitching kung may loose parts or if kailangan i-return pa lang kasi defective.