Leather, Footwear & Accessories Manufacturing worked example

Size Curve Inventory with daily sell-through rate of 63 pairs / day: a worked example

This scenario runs the size curve inventory calculation on the strong side: daily sell-through rate of 63 pairs / day, with every other input held at its documented default. Use this when planning size-run inventory for a new season, setting reorder points by size, reviewing safety stock levels after a lead time change, or preparing inventory budgets for warehouse capacity planning.

The inputs for this scenario

  • Daily sell-through rate: 63 pairs / day (raised for this scenario; the documented default is 25)
  • Replenishment lead time: 75 days (unchanged)
  • Size-curve safety stock buffer: 200 pairs (unchanged)

Working through the calculation

  • Applying the documented formula (Cycle stock = daily sell-through rate x replenishment lead time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0 days for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 0.84 days for unprotected days.
  • At this operating point the engine returns 63 pieces for inventory.
  • At this operating point the engine returns 75 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where daily sell-through rate sits at 25 pairs / day and the headline result is 0 days, this scenario comes in 152% above the baseline at 0 days.
  • Use it when setting replenishment targets or reorder points for a footwear size curve or a single key size. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Protected days of supply: 0 days (headline result)
  • Unprotected days: 0.84 days
  • Inventory: 63 pieces
  • Daily usage: 75 pieces / day

Run it with your numbers

  • Every input above is editable in the live Size Curve Inventory calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.