Your measurements
cm
cm
cm
cm
cm
How to measure ↓
Measure over close-fitting clothes with a flexible tape. Keep it level and snug, not tight. The diagram shows each line.
Fabric & block
What's the difference? ↓
Both are drafted from the classic trouser foundation. The trouser has a longer back crotch extension, so it's roomier and the most forgiving to fit and sew. The slack trims the back extension for a closer seat.
Silhouette
How the leg shape works ↓
Knee and leg opening are measured around one leg. Presets scale with your thigh (or hip if thigh is blank); moving a slider switches to Custom. Leg opening narrower than the knee = taper, wider = flare. Room through the seat and thigh comes from Hip ease, not the leg shape.