Great entry level classic summer rollerski boot. Works with NNN, Prolink, and Turnamic classic bindings. Adjustable heel strap controls keeping the heel down. 

If you are a newbie combi boots for classic rollerskiing would provide more ankle support if you don't have great balance. 

Run a little long for sizing. 

We measured the inside lengths (stuck tape measure inside boot with insole in) and got the following lengths:

38 Euro: 9 5/8"

39 Euro: 

40 Euro: 10 1/8"

41 Euro: 10 1/2"

42 Euro: 10 5/8"

43 Euro: 11

44 Euro:

45 Euro: 11 1/2"

46 Euro: 11 5/8"

You can measure your foot by backing it up against a wall barefoot and measure out. Generally for summer sock thickness and to ensure toes aren't rubbing on front, you want a boot that is your foot length plus ~1/2-5/8"