I have 3 pair of MBT Sport 2's. Size 13.5. Love them, see my review. I ordered 2 pair of Siku's. Size 13-13.5. They don't fit. Not even close. Way short. I had this same problem with a pair of Mahuta's but a pair of Chakula's are OK. I don't know what the deal is .. I'd like to say 13-13.5 is code for shorter than 13.5 (which is how the Sport 2's are labeled) but the Chakula's were, in fact, labelled 13-13.5 as well. Amazon made the returns absolutely painless, including processing the refund almost immediately after UPS picked up the boxes but still, who needs the hassle? BTW, in case you're interested, I'm trying to stock up on these as MBT goes thru bankruptcy back in Denmark or wherever it is the company is based. Hopefully, someone will pick up the brand and continue producing a quality shoe as I've been unable to find a comparable replacement brand. (Hint: if you know of one, please share below). Thanks