The sole is only foam with no real Vibram or other type of hard outer sole that can be found on some other Teva Sandals. 1 connectivity is fantastic. The trainer can cope with different width spindles and bolt-thru. Floppy rubber soles also wear through in 2/3 wintersI dislike cork soled slippers as they are hard on your feet and Im in mine all day so these are the best for comfort in your foot archBest slippers Ive ever had,Worth the money and wont buy anything else ever! However, the V1 is nothing like my previous wide shoe (2E) purchase. Theyre lighter than a Birkenstock. For me the best temperature range is below 50 , and above 0 F. When it works its a beautiful and fun game. Despite Edwards, the film is very entertaining and worth a look for all you spy fans out there. Great sound, great battery life and the fit very well in my ears.