What to reorder, in which sizes.

Size curves built from demand net of returns, not gross sales. Broken size runs flagged before the stock goes dead. Purchase orders by size, with every quantity showing the history behind it.

Install free from the Shopify App Store → A read-only Shopify app for apparel brands. Free to find broken size runs; $29 a month for reorder quantities, with a 14-day free trial.

Below: a preview on a generated store. The free size split calculator runs on your own numbers, in your browser.

471units stranded in broken size runs

15%of units returned — 203 of 1,350

519units to order across 8 styles

2styles too new to forecast alone

Check your own store for broken size runs → Reads your public catalogue, names the styles, no login and no install.

What needs attention

Broken size runPleated Chino
L and M out of stock — 56% of demand. 246 units stranded in the sizes still listed.
Restock L and M →
Broken size runHeavyweight Tee
L and M out of stock — 60% of demand. 225 units stranded in the sizes still listed.
Restock L and M →
ReorderHeavyweight Tee
S, M and L run out before a reorder could land.
Order 189 units →
ReorderSlim Jean
S, M and L run out before a reorder could land.
Order 78 units →
ReorderPleated Chino
M and L run out before a reorder could land.
Order 71 units →
ReturnsSlim Jean
32% of units came back (65 of 203).
Check fit and description before reordering →

Every style

Style	Size curve — net of returns	Demand	Returns	To order
Heavyweight Teebroken run SMLXL	SMLXL	245net	10%	189
Oxford Shirt SMLXL	SMLXL	141net	15%	28
Slim Jean SML	SMLXL	138net	32%	78
Wool Overcoat SMLXL	SMLXLXXL	58.04net	8%	33
Ribbed Tank SMLXL	XSSMLXLXXL	128net	9%	61
Pleated Chinobroken run SMLXL	SMLXL	101net	14%	71
Knit Polo SMLXL	SMLXL	90net	12%	10
Linen Shirt SMLXL	SMLXLXXL	64net	20%	—
Crewneck Sweat SMLXL	SMLXL	129net	11%	49
Field Jacket SMLXL	SMLXL	41net	16%	—
Pleated Trouser (new)borrowed curve SMLXL	SMLXL	9net	10%	—
Shawl Cardigan (new)borrowed curve SMLXL	SMLXL	5net	17%	—

Hatched segments are sizes that are out of stock. A style is only called broken when the missing sizes carry more than 30% of its own curve and stock is still stranded in the sizes that remain — not simply because something sold out.

Purchase orders Download CSV

Heavyweight Tee — 189 units

245 net units in the window is 4.1 a day. 75 days of lead time and cover needs 306 to hold. Each size takes its share of that, less what it has on hand and on order, never below zero.

Size	Share	Returns	On hand	On order	Order
S	16.7%	5%	45	—	6
M	25.7%	14%	0	—	79
L	33.9%	5%	0	—	104

Oxford Shirt — 28 units

141 net units in the window is 2.4 a day. 75 days of lead time and cover needs 176 to hold. Each size takes its share of that, less what it has on hand and on order, never below zero.

Size	Share	Returns	On hand	On order	Order
M	28.4%	15%	31	—	19
L	30.5%	14%	45	—	9

Slim Jean — 78 units

138 net units in the window is 2.3 a day. 75 days of lead time and cover needs 173 to hold. Each size takes its share of that, less what it has on hand and on order, never below zero.

Size	Share	Returns	On hand	On order	Order
S	18.1%	36%	6	—	25
M	28.3%	40%	16	—	33
L	30.4%	21%	33	—	20

Wool Overcoat — 33 units

58 net units in the window is 1.0 a day. 75 days of lead time and cover needs 73 to hold. Each size takes its share of that, less what it has on hand and on order, never below zero.

Size	Share	Returns	On hand	On order	Order
M	34.5%	13%	20	—	5
L	29.3%	11%	12	—	9
XL · sold out since 2026-08-31	13.8%	0%	0	—	10
XXL · sold out since 2026-08-30	12.1%	0%	0	—	9

Ribbed Tank — 61 units

128 net units in the window is 2.1 a day. 75 days of lead time and cover needs 160 to hold. Each size takes its share of that, less what it has on hand and on order, never below zero.

Size	Share	Returns	On hand	On order	Order
S	19.5%	7%	21	—	10
M	28.1%	8%	6	—	39
XL	12.5%	6%	8	—	12

Styles with too little history of their own borrow a curve pooled from styles that do have it — weighted by units sold, and never from other thin styles. Those quantities are marked borrowed curve so you can see which numbers are estimates before you spend money. When there is no pool to borrow from, the mark is too little history instead: that quantity came from the style's own handful of units and is the weakest number on this page.

Why net of returns

A style selling 30 M and 40 L, with half the L coming back, reads as L-dominant on gross sales and M-dominant net of returns. Forecasting on gross sales over-orders exactly the sizes you are drowning in, and the error compounds every cycle. Refunds are attributed to the period of the sale, not the refund, so a January mistake does not corrupt March's seasonality.