7th Avenue – Lace-Up Sweater Shell Sultry style: a lace-up closure adds a flirty accent to our vibrantly hued shell, designed in lightweight knit fabric. Pairs perfectly with our Zip-Accent Sweater Skirt. overview V-neck with lace up detail. Sleeveless. fit & sizing Hits at hip. fabric & care 63% Rayon, 37% Nylon. Machine Wash. Imported.