These skates require absolutely ZERO break-in period. These are my 2nd pair of Jackson Vipers and I cannot tell you how fantastic they are. I own 5 pairs of skates, and the Jackson Vipers are by far my go-to boot. I am a 5'11" female with a size 10 running shoe foot. Jackson is true to size, hence I ordered a size 10 and still have enough room to wear thick comfortable socks. I also have very difficult feet -- flat (completely no arch & bunions developing) so for me to say a boot is comfortable, there is no exaggeration. I would suggest you be careful with the skate right out of the box. Check the wheel tightness and truck tightness. My wheels were so tight, I had to have my male neighbor turn the nuts for me. By contrast, the trucks were very loose. It is commonplace to check your skates, so I did not feel negative about this at all. The stock wheels are the very, very best OUTDOOR wheels. These Atom Pulse Lite wheels (62mm) literally push the street debris away from you as you skate. You can see the little pebbles fly away from the wheels, and hear little sticks and leaves crack beneath you. This type debris doesn't even cause a disturbance in your glide whatsoever!! This allows you to stop worrying about taking a serious tumble because of a pebble getting lodged under your truck, and then eating the asphalt. No one needs that. I am also a "seasoned" skater, so a fall is something I seriously DON'T WANT OR NEED in my life. Do your research, but I'm telling you, there is no way you'll be disappointed with these skates. Go for it! Buy these skates! Don't hesitate another second! PS) These wheels, given they are designed for outdoor, still have the agility you need on your transitions. Turns are smooth and flow perfectly! Believe that!