Finding sheets for an Alaskan King bed is harder than finding the mattress itself. Standard King sheets won't come close – you need sheets made for a 108" × 108" mattress, and only a handful of companies make them. The good news: the options that exist range from budget microfiber to premium organic cotton. Here's exactly what's available, what to look for, and how to avoid expensive mistakes.
Why Standard Sheets Don't Work
A standard King fitted sheet is designed for a 76" × 80" mattress. An Alaskan King is 108" × 108" – that's 32 inches wider and 28 inches longer. No amount of stretching will make a King sheet fit. Even California King sheets (72" × 84") are far too small.
You need sheets specifically made for 108" × 108" mattresses. These are specialty products – you won't find them at Target or Bed Bath & Beyond. But they exist, and they're not as expensive as you might expect.
Deep Pocket Guidance
Pocket depth is how deep the fitted sheet's elastic pocket is – it determines the maximum mattress thickness the sheet can accommodate.
Most Alaskan King mattresses are 10–14 inches thick. Here's what you need:
| Mattress Thickness | Minimum Pocket Depth |
|---|---|
| 10" | 13" pocket |
| 12" | 15" pocket |
| 14" | 17" pocket |
| 14"+ (with topper) | 18–20" pocket |
Rule of thumb: Add 3 inches to your mattress thickness. If your mattress is 12 inches thick, look for sheets with at least a 15-inch pocket depth. This gives enough fabric for the sheet to tuck under the mattress and stay in place.
If you use a mattress topper, add the topper thickness to your mattress height before calculating. A 12-inch mattress with a 3-inch topper needs an 18-inch pocket depth.
Who Sells Alaskan King Sheets
As of February 2026, these sellers carry sheets specifically sized for 108" × 108" Alaskan King beds:
OCOCHI
The widest selection of oversized bedding. Offers fitted sheets, flat sheets, duvet covers, and mattress protectors in Alaskan King size. Materials include organic cotton, bamboo, and microfiber. Ships worldwide with free standard shipping. Price range: $150–$400 for sheet sets.
Alaskan King Bed Co.
Carries luxury bedding sets designed for their own mattresses. Cotton sateen and organic options. Sheet sets include fitted, flat, and pillowcases. Price range: $200–$400+.
Mattress Insider
Offers 600-thread-count cotton Alaskan King sheet sets. They also carry fitted sheets sold individually if you don't need a full set. Price range: $150–$300.
Big Mattress Co.
Carries oversized bedding including sheets and comforters for all their mattress sizes. Price range: $100–$300.
Wyoming King Beds
Carries bedding for their Wyoming King (84" × 84") but also has some options for larger sizes. Worth checking for availability.
Important: Most sellers don't carry a deep catalog of sheet options. You might find 2–3 fabric choices per seller, not the dozens available for standard sizes. If you want variety, check multiple sellers.
Materials Compared
Here's how the common sheet materials compare at Alaskan King size:
Cotton Sateen (300–600 TC)
- Feel: Smooth, slightly silky, medium weight
- Durability: Good – holds up to washing well
- Temperature: Neutral to slightly warm
- Price at AK size: $150–$350
- Best for: Most people – good balance of feel and durability
- Available from: OCOCHI, Alaskan King Bed Co., Mattress Insider
Bamboo / Bamboo Viscose
- Feel: Soft, lightweight, naturally moisture-wicking
- Durability: Moderate – can pill over time
- Temperature: Cool – good for hot sleepers
- Price at AK size: $150–$300
- Best for: Hot sleepers, those who prefer lightweight sheets
- Available from: OCOCHI
Microfiber (Brushed Polyester)
- Feel: Soft, lightweight, wrinkle-resistant
- Durability: Good – doesn't pill easily
- Temperature: Can trap heat
- Price at AK size: $80–$150
- Best for: Budget buyers, guest rooms
- Available from: OCOCHI, Big Mattress Co.
Organic Cotton
- Feel: Crisp to soft depending on weave, gets softer with washing
- Durability: Excellent
- Temperature: Breathable, good year-round
- Price at AK size: $200–$400+
- Best for: Those who prioritize natural materials
- Available from: OCOCHI, Alaskan King Bed Co.
Fitted vs Flat vs Sets – What's Available
Not every seller offers every piece individually. Here's the breakdown:
Fitted sheets: Available individually from most sellers. This is the critical piece – the one that actually needs to be 108" × 108" with adequate pocket depth.
Flat sheets: Available as part of sets from most sellers. Some sellers offer them individually. An oversized flat sheet for an Alaskan King is typically 120" × 120" or larger (to drape over the sides).
Sheet sets (fitted + flat + pillowcases): The most common purchase option. Most sellers bundle these rather than selling individual pieces.
Duvet covers: Available from OCOCHI and Alaskan King Bed Co. Less common than sheets.
Tip: If you can't find the exact flat sheet or duvet cover you want in Alaskan King size, a King-size flat sheet can work as a top sheet – it just won't drape over the sides as much. But the fitted sheet must be the correct 108" × 108" size.
Budget Path: Cheapest Workable Options
If you're on a budget after spending $3,000+ on a mattress and frame:
Cheapest option ($80–$120)
Microfiber sheet set from OCOCHI or Big Mattress Co. These are perfectly functional sheets – they just won't have the luxury feel of cotton or bamboo. Good for getting started while you save up for nicer bedding.
Mid-range sweet spot ($150–$250)
Cotton sateen set from Mattress Insider or OCOCHI. Good quality, comfortable, durable. This is where most buyers land.
Premium ($250–$400+)
Organic cotton or luxury sateen from Alaskan King Bed Co. or OCOCHI. Worth it if you care about materials and plan to keep the sheets for years.
One hack: Buy two sets of microfiber sheets to start (so you can rotate while washing), then upgrade to one nice set when budget allows. At $80–$120 per set, two microfiber sets cost less than one premium set.
Comforters and Duvets
Sheets are the first bedding purchase, but you'll also need something on top:
Alaskan King comforters are available from OCOCHI, Alaskan King Bed Co., and Big Mattress Co. Expect $200–$500. See our Alaskan King comforter comparison for options.
If you can't find a comforter you like in Alaskan King size, an oversized King or super-King duvet (120" × 120") can work – it just won't have as much side drape as a properly sized option.
Frequently Asked Questions
What size sheets fit an Alaskan King bed?
You need sheets specifically made for a 108" × 108" mattress. Standard King (76" × 80") and California King (72" × 84") sheets won't fit. Look for sheets labeled "Alaskan King" or "108 × 108" from specialty sellers.
Where can I buy Alaskan King sheets?
OCOCHI, Alaskan King Bed Co., Mattress Insider, and Big Mattress Co. all carry Alaskan King sheet sets. OCOCHI has the widest selection. See our Alaskan King sheets page for a full comparison.
How much do Alaskan King sheets cost?
$80–$400+ depending on material. Microfiber sets start around $80–$120. Cotton sateen runs $150–$300. Premium organic cotton is $250–$400+.
What thread count should I look for in Alaskan King sheets?
For cotton sheets, 300–600 thread count is the sweet spot. Below 300 can feel rough; above 600 doesn't necessarily mean better quality. Thread count is less relevant for bamboo and microfiber sheets – focus on feel and weight instead.
Do Alaskan King sheets come in deep pocket sizes?
Yes. Most Alaskan King sheets are designed for mattresses up to 14–16 inches thick. If your mattress is thicker than 14 inches (or you use a topper), check the pocket depth specification before buying. Look for 15–18 inch pockets.