够宽，无需鼻。可在衔接拐角加防滑条，立体感立马有了,像这种

https://www.homedepot.com/p/ComposiGrip-Composite-Anti-Slip-Stair-Tread-48-in-Beige-Step-Cover-01126C/204497967?MERCH=REC-_-PIPHorizontal2_rr-_-204497956-_-204497967-_-N

或这个

https://m.youtube.com/watch?v=Vncav7ewFBs