The best oversize king quilt (120×120) overall is the Company Cotton Quilt by The Company Store for its organic cotton, weight options, and durability. For a budget-friendly pick, the Laura Ashley Home Reversible Quilt offers great value with OEKO-TEX certification and machine washability.
An oversize king quilt measuring 120×120 inches is a generous size that drapes beautifully over deep mattresses and allows for extra overhang. Our research team compared dozens of quilts based on specifications, certifications like OEKO-TEX and GOTS, and aggregated owner reviews from verified purchasers. We ranked the top 7 based on quality materials, construction, weight options, and overall customer satisfaction.
Owners consistently praise generous sizing that fits thick mattresses without pulling, and many highlight the convenience of machine washability. We focused on quilts with proven durability, allergen-friendly certifications, and consistent positive feedback across multiple seasons of use. Avoid cheap imports with inconsistent sizing by choosing from our vetted list.
Made from 100% organic cotton with a 300-thread-count shell and cotton fill. Available in lightweight and midweight versions. GOTS and OEKO-TEX certified ensures no harsh chemicals.
Check current priceWe do not take payment for placement and we do not physically test products. Rankings come from manufacturer specifications, material certifications (CertiPUR-US foam, OEKO-TEX textiles), and the weight of aggregated verified owner reviews, analyzed for durability, heat retention and sagging. The scores in this guide are MattressVetted editorial research ratings — our assessment of the available evidence, not customer star averages. See how we rate.
Full method on our how we rate page.
Shoppers wanting a premium organic cotton quilt in multiple weights · Type: Cotton | Firmness: N/A | Trial: 90 days
Made from 100% organic cotton with a 300-thread-count shell and cotton fill. Available in lightweight and midweight versions. GOTS and OEKO-TEX certified ensures no harsh chemicals.
What owners report: Owners report exceptional quality and accurate 120×120 sizing. Many appreciate the ability to customize warmth with two weight options.
Shoppers wanting a stylish, machine-washable quilt at a moderate price · Type: Polyester/Cotton blend | Firmness: N/A | Trial: 30 days
Features a reversible design with two coordinating patterns. Filled with 100% polyester batting and OEKO-TEX certified. Prewashed for softness and minimal shrinkage.
What owners report: Owners love the reversible style and how it looks after many washes. Sizing is generous and true to 120×120, fitting deep mattresses well.
Hot sleepers or warm climates who want breathable comfort · Type: Cotton | Firmness: N/A | Trial: 60 days
100% cotton percale shell with a lightweight fill that promotes airflow. OEKO-TEX certified and prewashed for softness. Available in multiple solid and pattern options.
What owners report: Owners confirm it keeps them cool without being too thin. The oversized 120×120 dimensions are praised for ample drape on king beds.
Shoppers on a tight budget wanting full 120×120 sizing · Type: Microfiber | Firmness: N/A | Trial: 30 days
Affordable oversize quilt available in many colors. Made from brushed microfiber fabric with hollow fiber filling. Machine washable and wrinkle resistant.
What owners report: Owners say it's a great value for the price, though some note it's thinner than expected. Sizing is accurately 120×120 but may shrink slightly after washing.

Those wanting a quilt that stays put without shifting · Type: Microfiber | Firmness: N/A | Trial: 30 days
Designed with a dense 240gsm microfiber fill that adds weight and stays in place. Prewashed for softness but maintains structure. OEKO-TEX certified.
What owners report: Owners like that it doesn't slide around on the bed. Some find it too heavy for summer use but appreciate the secure feel.
Eco-conscious shoppers wanting a linen-cotton blend for durability · Type: Linen/Cotton | Firmness: N/A | Trial: 90 days
Made from 35% linen and 65% cotton for natural texture and breathability. Oeko-Tex certified and stonewashed for softness. Generous 120×120 cut allows for shrinkage.
What owners report: Owners appreciate the lived-in look and how it softens over time. Sizing after washing is exactly as hoped, fitting deep mattresses well.

Style-focused shoppers who want a decorative yet functional quilt · Type: Cotton | Firmness: N/A | Trial: 60 days
Quilted cotton coverlet with intricate stitching and a prewashed finish. Available in exclusive patterns. OEKO-TEX certified and machine washable on gentle cycle.
What owners report: Owners rave about the unique designs and how they elevate the bedroom. The oversized 120×120 dimensions work well for a relaxed, gathered look.
A 120×120 inch quilt is designed for an oversize king bed, typically a California king or deep king mattress. It provides generous overhang of about 15-20 inches on each side on a standard king bed.
Most of the quilts we reviewed are machine washable, but always check the care label. Larger quilts may require a commercial-sized washer at a laundromat if your home machine is too small.
A quilt is thinner, with a layer of batting stitched between two layers of fabric, making it more breathable and easier to layer. A comforter is thicker and often filled with down or synthetic fibers.
Some models, like the Laura Ashley Home Reversible Quilt, feature two different patterns on each side. Others are one-sided. Check product details before purchasing if reversibility is important.
Look for OEKO-TEX Standard 100, which ensures no harmful chemicals, or GOTS (Global Organic Textile Standard) for organic materials. CertiPUR-US applies to foam filling, not typically quilts.
The Company Store Company Cotton Quilt is our overall winner for its certified organic materials, customizable weights, and excellent owner feedback. For budget-conscious shoppers, the Laura Ashley Home Reversible Quilt offers great value with style and easy care. If breathability is key, the Pottery Barn Lightweight Quilt delivers cooling comfort.