sorel slimpack usa size 6 Sorel Women's Slimpack II Lace Boots The Sorel Women's Slimpack II Lace Boots is a timeless waterproof, insulated PAC boot that channels the classic style of an urban chic boot while keeping feet dry and warm in inclement weather. Ideal for everyday wear, the full-grain leather upper and iconic rubber shell create a protective foot environment while the molded EVA footbed and integrated arch support provide lasting comfort.