Can anyone tell/know what the sole is like, my sisters got similar but hers were really cheap (primark) and the sole is just a piece of foam. I wouldn't want anything like that, have these got 'proper' soles for outside? [[http://www.amazon.co.uk/Bearpaw-Womens-Knit-Tall-Trimmed/dp/B0026ZQJSO/ref=amb_link_158540567_1?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=center-4&pf_rd_r=1RY8HRVF5N22MP75ME0A&pf_rd_t=101&pf_rd_p=218911307&pf_rd_i=350613011 bearpaw boots]]