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Sizesmart™

Size Curve Decisions, Orchestrated Autonomously Across Retail

Only With Impact Analytics
The wrong size curve creates markdowns before inventory reaches the shelf. AI-native SizeSmart builds a size curve for every style and store and, through autonomous orchestration, reconciles size decisions with demand, inventory, and assortment before orders are placed. Only with Impact Analytics are size curves, vendor packs, allocation, and demand continuously orchestrated as one connected buying system.
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Sizesmart™

AI-Native Size Curve Management

Optimize size curves with AI-native SizeSmart. Improve accuracy across styles and locations, reduce markdowns, and boost full-price sell-through by aligning size distribution with true customer demand.
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Trusted by Market-Leading Global Brands
In the News

As Featured in the Latest Coverage

NBC's TODAY Show
How GLP-1 Weight Fluctuations Are Driving Up Clothing Returns
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Americans on GLP-1s Are Overwhelming Retailers With Their Nonstop Returns
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What is SizeSmart

AI-Native Size Curve Optimization

SizeSmart is AI-native size curve optimization software built for autonomous retail operations. It builds size curves for every style, store, and channel and continuously refines them as demand changes. Through autonomous orchestration, size decisions stay aligned with assortment, allocation, and demand planning.
Autonomous Orchestration
Size curves, vendor packs, and allocation are deeply connected. SizeSmart plans them together through autonomous orchestration, ensuring the sizes you buy, the packs you negotiate, and the units each store receives all reflect the same demand signals.
AI-Native Size Intelligence
SizeSmart builds size curves from your own sales and third-party demand data, feeding them into the buying and allocation workflows your planners already use.
Demand-Led Size Accuracy
SizeSmart updates size distributions continuously as demand moves, holding accuracy across near-term allocation and the longer horizons your buys are planned on.
Optimized Size Execution
SizeSmart sets size distribution by region, channel, and vendor pack, so inventory lands where each size sells and pack configurations hold against the plan.

Every Size Decision Made on What Actually Sells

Size curves, vendor packs, and allocation depend on one another. SizeSmart plans them together through autonomous orchestration, so the sizes you buy, the packs you order, and the units each store receives all reflect the same view of demand.
Precision Size Accuracy
SizeSmart builds each size curve from what that store actually sold, size by size, adding outside demand data where your own history is thin.
Adaptive Size Planning
SizeSmart tracks how each size sells through the season and reshapes the curve as demand moves, so the next buy reflects what is selling now.
Optimized Buy Execution
Vendors ship sizes in fixed bundles. SizeSmart recommends the bundle closest to each store's size demand, so fewer units arrive in sizes that will not sell.
Data-Driven Vendor Negotiations
SizeSmart shows vendors the size and pack evidence behind your buy, so pack configurations and terms are negotiated on your own numbers.

Sizing Solutions for Every Industry

Every retailer sells a different size profile. SizeSmart adapts size curves to the assortment structure, customer base, and store formats of each one through AI-native planning and autonomous orchestration.

Apparel, Accessories & Footwear

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Fashion sizing shifts style by style. SizeSmart forecasts size demand at store level and chains new styles to comparable history, lifting full-price sell-through while cutting the markdowns broken size runs create.

Department Store

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Multi-brand assortments carry conflicting size profiles. SizeSmart sets curves brand by brand against demand at each location, improving inventory precision while giving vendor conversations firmer evidence.

GET STARTED

Set the Rules and Let SizeSmart Continuously Refine the Curve

Set how far SizeSmart runs on its own, from every curve reviewed to fully autonomous. At any level, it clears the routine work and brings the decisions worth your judgment to your team.
01

Build

SizeSmart identifies the gaps in your current size curves and builds accurate size profiles at store, region, and style-color level from your own sales history.
02

Deploy

Once deployed, SizeSmart continuously learns from new sales data and improves size decisions through autonomous orchestration, coordinating every curve with the assortment and allocation plan around it.
03

Monitor

SizeSmart continuously tracks sales patterns and demand signals, refining size profiles as trends shift so curves stay aligned with what customers are actually buying.
01

Build

SizeSmart identifies the gaps in your current size curves and builds accurate size profiles at store, region, and style-color level from your own sales history.
02

Deploy

Once deployed, SizeSmart continuously learns from new sales data and improves size decisions through autonomous orchestration, coordinating every curve with the assortment and allocation plan around it.
03

Monitor

SizeSmart continuously tracks sales patterns and demand signals, refining size profiles as trends shift so curves stay aligned with what customers are actually buying.

See the Cost of a Broken Size Curve

Set three simple parameters to see a ballpark analysis of your potential savings through size curve optimization.
$0.5 B $1 B $5 B
10% 30% 100%
10% 40% 90%

Markdown Sales $: 0

Markdown AUR: 0

Markdown Sales Units: 0

1% Improvement in Markdown sales units
0Improvement in Gross Margin

Based on your inputs

1% Improvement in Markdown sales units

will lead to

0Improvement in Gross Margin

Optimal size curves typically boost Retail Markdown
Sales Units by 5-8%

Potential improvement in Gross Margin

0

Submit your email below to see your potential Gross Margin improvement.

Sizing Success for Retailers

SizeSmart helps retailers buy closer to actual customer demand, reduce markdowns caused by broken size runs, and improve inventory productivity across stores and channels.
5-10%
Improvement in Gross Margin
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Trusted by Leading Companies

In our clients’ own words

“This partnership allows us to eliminate repetitive, low-value tasks so our merchandisers can focus on understanding what is truly happening in our brand and make quicker, higher-quality decisions to get the right products in the right places for our customers.”

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AllSaints

“We landed on Impact Analytics for 3 core reasons: culture, technology, and an intuitive interface that was easy to adopt.”

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Signet Jewelers

“Our planners immediately recognized that Impact Analytics understood the realities of retail planning at scale. The opportunity to move from spreadsheet-driven, line-by-line planning to an exceptions-management model is a significant step forward.”

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Michael Hill

Autonomous AI Agent Orchestration

Only With Impact Analytics
Rethink how your business makes decisions. Replace disconnected AI with agentic intelligence that moves every function toward the same business outcome. Discover how Impact Analytics helps you lead the shift to a fully orchestrated, autonomous enterprise.
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Frequently Asked Questions

How does SizeSmart optimize size curves and size allocation?

SizeSmart uses AI to auto-generate precise, data-backed size curves and continuously refine them using demand analytics and external datasets. This improves buy accuracy, vendor pack optimization, and inventory precision.