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.

The 5/A Baker Expand-O-Sheet is made for miniature horses, ponies and fast-growing foals, in the original 5/A Baker single weave fabric — a stall sheet for chilly spring and summer evenings rather than deep cold. The overlapping front closure and belly band let the same sheet keep fitting as the horse grows.

Best for

Mild-weather stall use for foals, ponies and minis
Youngstock that outgrow a sheet within a season
Barns needing sizing that adjusts rather than replaces

Key features

Original single weave fabric — lighter than the triple weave Expand-O-Blanket.
Overlapping front closure and belly band — stainless steel hardware, overlapping for maximum size adjustment.
Detachable elastic leg straps — fully detachable, and hold the sheet in place.
Extra Large adds fittings — an additional surcingle strap and an adjustable fit strap at the withers.