Split-sole anti-slip attachments for footwear

In combination, an article of footwear and an attachment therefor, said article having sole structure and upper structure secured thereto, the upper structure having a waist line dividing the article into fore and rear parts, the rear part provided with a heel portion and the fore part having a toe portion, and said attachment including a flexible, resilient sole and upper structure connected thereto, the upper structure of the attachment including a resilient counter yieldably maintained in a first position against spreading and defining a heel seat with the portion of the sole which is bordered thereby, the heel seat of lesser width than the heel portion of the article, the upper structure also including resilient, waist line arms, one for each side of the sole and curved inwardly and forwardly towards the opposite side, the two arms spaced and dimensioned to enable the toe portion of the article to be entered between the two arms and the sole of the attachment including two lengthwise sections joined together in the heel seat, the maximum width of the sole less than the widest portion of the forepart of the article whereby when the article is slid forwardly relative to the attachment, the two sections and the heel seat are spread apart with the arms as the forepart of the article is forged between and forwardly of the arms, the resiliency of the heel seat then forcing the heel seat and the arms into holding contact with the heel portion and waist line of the upper structure of the article, respectively, and the tread surfaces of said sole sections provided with traction enhancing members.