10 Best Cal King Flannel Sheets 2025 in the United States

The True North by Sleep Philosophy Cozy Flannel Sheet Set is made from 100% cotton flannel, offering a warm and soft feel perfect for cold weather. The fabric has a 160 thread count, which is moderate and contributes to gentle comfort without being heavy or stiff. The brushed flannel weave adds softness but can create some natural lint, especially when new, which tends to reduce after a few washes. The set fits California King mattresses well, with an elastic fitted sheet featuring a deep 14-inch pocket that can accommodate thicker mattresses and keeps the sheet snug without slipping.

The novelty multi-leaf print with animals and stars adds a cute, casual design that’s especially appealing in kid-friendly or cozy bedroom settings. Care is straightforward: machine wash cold and tumble dry low, but avoid bleach; adding vinegar in the wash can help reduce lint shedding. Initial lint shedding may be a concern for some users before it settles down. These sheets prioritize warmth and comfort over a luxurious silky feel, so they may feel a bit fuzzy if a very smooth fabric is preferred.

This set is a strong option for those seeking affordable, durable, and warm flannel sheets with a fun design, especially suited for colder seasons and those who appreciate cozy bedding.

The True North by Sleep Philosophy California King sheet set is made from 100% cotton flannel, offering a soft and breathable fabric that is perfect for keeping warm during cooler months. With a 400 thread count and brushed flannel weave, these sheets feel cozy and comfortable without being overly heavy. The sheets include an oversized flat sheet, deep-pocket fitted sheet that fits mattresses up to 14 inches thick, and two pillowcases, ensuring a secure and snug fit for most California King beds. The classic Ikat Tree print adds a stylish, contemporary touch to bedroom decor.

Care is simple since the sheets are machine washable; using cold water and washing separately helps maintain their softness and reduces lint. Some users may notice initial shedding, but this typically lessens after a few washes. These flannel sheets provide excellent warmth and comfort, making them best suited for cooler seasons rather than year-round use. Additionally, the color and pattern options are limited to the print shown, which may not suit all tastes. These sheets are a solid choice for those seeking soft, warm, and well-fitting flannel sheets designed specifically for California King beds.

The Sleep Philosophy True North flannel sheet set is made from 100% cotton flannel, offering a soft, breathable fabric that’s been brushed to add extra warmth and coziness—perfect for chilly seasons like fall and winter. The heavyweight nature of the fabric (with a 400 thread count) means these sheets feel substantial and snug, helping you stay warm on cold nights without overheating.

The set includes everything you need for a California King bed: one flat sheet, one fitted sheet with a deep 14-inch pocket to fit thicker mattresses, and two matching pillowcases. The elastic all around the fitted sheet helps keep it securely in place, which is great if you move around while sleeping. The design, called Tan Woodland Winter, features a casual, nature-inspired pattern that adds a cozy, cottage-like vibe to your bedroom.

Caring for these sheets is simple since they’re machine washable, though expect some initial lint shedding because of the brushed flannel—adding vinegar during washing can help with this. Flannel naturally sheds a bit at first and requires gentle care to maintain softness over time. This set is a solid pick if you want warm, comfortable, and stylish flannel sheets for the winter months, especially if you have a California King mattress and prefer a snug fit with a soft, inviting texture.