This pattern is by Christine’s Stay-on Booties. It is seamless. The sole starts with Turkish cast-on. The FO is more oval than the very rectangular Christine’s. The upper features ribbing (vs. the original stockinette) w/ a cute picot bind-off. The eyelets are reduced to 8 (vs 10 in the original pattern) so that the lace wraps around the outside at the heel, likely more comfortable for the kidlet. Other techniques include German short rows.