Cap Constructions for in stock full lace wigs, in stock silk top full lace wigs, and in stock glueless (hidden knots, or injection) lace front wigs. Full Swiss lace with stretch lace in the crown. The lace colors include light brown, brown, and original color (tint beige). Stock wigs come in generic sizes of small, medium, and large. A Medium size is considered 22.25"- 22.75" in circumference measurement. 21.5" and 21.75" is a Small cap and 23" is a Large cap.