If your Shetland is like my mini you might not need a blanket.
I’m looking at him now & I think I see the very beginning of a Fall coat
We’ve been having crazy temp swings - 90 Saturday, 70 today. Before last week I considered turning my furnace on!
In the dead of Midwest Winter - including Polar Vortex temps - he’s a yak.
My horses - 21yo horse, 23yo pony, 9yo mini - have free access to stalls from pastures.
There’s no shelter in the pastures, but they choose Out over In most days & even evenings (evidenced by the lack of manure in stalls in the mornings) year-round.
I have 100g fill, water-resistant tunrout blankets for all 3, but they only get used if snow piled on their backs is melting. Even then, once they’re dry beneath, the blankets come off.
FWIW:
I had a WB bred in Queensland Australia, spent 6yrs in FL then came to me at 15, showslick with just a cotton sheet.
I used my 78 blanket on his 84 self until his new one came.
But he never grew more than plushy in Winter, even unblanketed.
Let your pony tell you how much blanket he needs.
I have heated buckets in the stalls & they’ve been Lifesavers.
Trough is a 50gal foodgrade plastic barrel I heat with a sinking deicer.
{KnockWood} In 19yrs power outages have never lasted long enough for water to be a problem.
With a single 11h exception, handled with bottled gallons from a Dollar store.
I had my frostfree hydrant placed inside my barn.
Barn is unheated, but even with stall doors in back left open 24/7/365, it’s always at least 10° warmer (small comfort in -0 temps) but hydrant never freezes. Well, once when I left the hose on
Now hose comes off when it goes below 40F & I water Bucket Brigade method.
Lucky for me, I have neighbors who plow my driveway & the 250’ path from house to barn.
I use sand from my indoor to make any icy spots safe for me & horses.
To date, I’ve never restricted their turnout due to ice & so far they’ve been sensible & safe.
Good Luck in your move!