4mm twin wall UV-resistant polycarbonate panels keeps plants safe

Wind Resistance: 12m/s

8lbsOverall Dimensions: 28

Easy-grip knobs enable tilting up and down for  -10°~+10°

Flex-Frame Blue Light Blocking Glasses for Kids Medium Size Sheds 4mm twin wall UV-resistant polycarbonateConstructed with durable and pliable silicone these frames hold up to the comfort and durability standards of most energetic kids. Lenses protect children from damaging blue light spectrum emitted from portable devices like phones, computers and tablets by blocking UV rays. Soft frames fit most kids aged 4 to 11 years old. Specifications Material: Soft Silicone Protection: Tested to UV 400 Dimensions: 4. 72"W x 4. 9"L (12cm x 12. 4cm) Lens Size: 1.