Jacks Foal & Pony Expand-O Size Guide

The Expand-O-Blanket and Expand-O-Sheet (both original and 200g insulated versions) share the same size ladder for miniature horses, ponies, and fast-growing foals.

Size	Girth Measurement
Medium	30"–37"
Large	38"–45"
Extra Large	46"–53"

How to measure
The front closure and belly band overlap for maximum size adjustment, so a wide range is covered by each size. The Extra Large size features an additional surcingle strap and adjustable fit strap at the withers.

Sizing notes: Measurements shown are manufacturer-published figures and apply identically to the Expand-O-Blanket, 200g Expand-O-Blanket, Expand-O-Sheet, and 200g Expand-O-Sheet.

A waterproof, breathable turnout built for miniature horses, ponies and fast-growing foals. The overlapping front closure and belly band let the blanket expand as the animal grows, so one rug covers a wider range than its nominal size suggests.

Best for

Foals growing quickly through a season
Ponies and miniature horses in wet or cold turnout
Barns that would rather not rebuy a rug mid-winter

Key features

200g Curvofil IV insulation — medium weight, the same fill used across the Baker range.
1,500-denier woven polyester shell — waterproof and breathable.
Teflon finish — added for stain resistance.
Overlapping front closure and belly band — stainless steel hardware, adjustable for maximum size range.
Fully detachable elastic leg straps — keep the blanket in place.