For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

Experimental part: small hole imaging/light reflection/light refraction/lens imaging law/direct light/light's three primary colors/concave-convex lens imaging law...etc.

Environmentally friendly materials: made of safe, environmentally friendly and durable high-quality ABS plastic materials. Children can spend more time playing with DIY physical optical toys. DIY toys are easy to assemble and disassemble. It only takes a few minutes. DIY toys can help them learn simple optical principles and understand the principles of optical imaging.

Widely used: This is a safe and simple physical optics starter kit. This kit is perfect for science projects, summer camps, science fairs, hands-on centers, science clubs, home school learning, teaching aids, gifts for children, and all things related to STEM education for grades 3-4.

The kit includes: etc.

Customer service: guarantee 100% customer satisfaction, your satisfaction is our top priority. If there is a problem during the transaction or use, please send me an email and I will solve it as soon as possible