I'm cutting the tag off so you can wear them whenever you want.
I'm taking off the tag so they'll be ready for you whenever you want to wear them.
ーI'm cutting the tag off so you can wear them whenever you want.
「履きたい時にいつでも履けるよう、タグを切ってるんだよ。」
cut the tag off で「タグを切る」
wear them whenever you want「いつでも履きたい時に履く」
ーI'm taking off the tag so they'll be ready for you whenever you want to wear them.
「いつでも履きたい時に用意ができているようタグを取ってるんだよ。」
take off で「取る・取り除く」
ready for で「準備ができて・用意ができて」
ご参考まで!