3-Tier Vented: Our large outdoor parasol adopts a 3-tier ventilation system for facilitating the airflow below the canopy. Sufficient cool air under the shade allows you a super cool summer. Heavy-duty Iron: This patio parasol is supported by 8 strong heavy-duty main ribs and 8 supportive ribs as well as a 0.1ft/ 38 mm/ 1.5″ (dia.) center pole, durable, stable and safe to use. 220g Thick Polyester: We adopt high-quality 220 g polyester to craft the canopy of this 10ft patio parasol. Polyester features excellent resistance to wear, UV, and weather attack as well as high colorfastness, perfect material choice for a professional sunshade. Large Shade: With a regular octagon-shaped canopy that each of its sides measuring 4ft/ 123 cm/ 48.5″, this 10 ft patio parasol is great for 6-person patio dining sets with about 78 sq. ft. of shade, large enough for your family and friends to enjoy your wonderful time in the yard/ garden/ park/ patio/ beach. Base Not Included: To be noticed, this patio parasol does not include the base. A 30-34 kg/ 65 - 75 lb base is recommended to suit this parasol.