Both sizes are narrow, but their lengths differ. A twin mattress is typically about 38" x 75", while a twin XL is about 38" x 80". That extra length matters for taller sleepers and many dorm beds.

• Sheets: Fitted sheets need the exact size (twin vs. twin XL) to fit properly.
• Comforters: Many comforters are forgiving and may list compatibility for both, but always check the product details.
• Mattress depth: Measure your mattress (and topper) to choose the right pocket depth.
• Shopping tip: Use size filters on Walmart.com and review the “Specifications” and “What’s included” sections before adding to cart.

It depends on the type of set you pick. Product pages list exactly what’s included, but here’s a general guide:

• Sheet set: 1 fitted sheet, 1 flat sheet, and 1 pillowcase.
• Comforter set: Comforter plus 1 sham (sometimes decorative pieces vary).
• Bed‑in‑a‑bag: Often includes a comforter, sheets, sham(s), and sometimes a bed skirt or decorative pillow.

Tip: Check the “What’s included” section to avoid surprises, especially if you need both sheets and a comforter. If you like extras (like a second pillowcase), you can add individual twin bedding pieces separately on Walmart.com.

Think about feel, durability, and maintenance. Different fabrics suit different routines:

• Microfiber: Soft, lightweight, and typically wrinkle‑resistant. It’s a popular low‑maintenance pick for busy households and dorms.
• Cotton (percale or sateen): Breathable and comfortable. Percale feels crisp; sateen feels smoother. May wrinkle more than microfiber.
• Blends: Cotton/poly blends balance breathability with easier care.
• Jersey knit: T‑shirt‑like softness with a casual vibe.

Tip: Check care instructions on each product page. If you prefer fewer wrinkles and quick drying, microfiber or blends can be convenient. For a natural feel, cotton is a solid choice.

Always start by reading the care label on each piece. Care needs vary by fabric and fill.

1. Sort: Wash sheets and comforters by color and fabric type to help reduce color transfer and wear.
2. Cycle: Use a gentle or normal cycle with cold or warm water, depending on the label.
3. Detergent: Use a mild detergent; avoid overloading the washer so items can rinse well.
4. Drying: Tumble dry on low to medium heat, checking periodically. Fluff comforters to help distribute fill.
5. Care check: Some materials may need air‑drying or lower heat. Following the product’s care guide can help maintain look and feel.

You can shop individual twin items—like extra pillowcases, fitted sheets, or shams—right on Walmart.com.

• Filter by size: Select “Twin” (or “Twin XL”) so pieces fit your mattress.
• Match details: Check fabric type, color, and thread style to coordinate with your current set.
• Depth matters: Verify the fitted sheet’s pocket depth to accommodate toppers.
• Availability: Pickup and delivery options vary by location and are shown at checkout.

Review the item’s “Specifications” and “What’s included” sections to confirm you’re getting exactly what you need.