Buy Any Item Get 1 Free DIY STEM Toys. Code: BOGO


Once your order is shipped, you’ll receive a tracking number via email so you can keep an eye on its activity while it makes its way to you. You can also log into your account at any time and select “My Orders” to review your order status.

This date refers to when the product will ship from our facilities. Note, it does not refer to when the product will be delivered. 

Note: based on the volume and capacity, some orders may be processed earlier than the date shown on our website.

Usually, an item will be ship out within 1-4 days (except customized products)

We use USPS, 4PX, China pot, DHL for international orders, shipping time 7-25 days.

To make things easier for you, we are currently offering free shipping on all US. No discount code is required.

United States
Orders above $70: Free standard shipping.
Orders below $70: $8 flat rate for standard shipping.

$20 shipping fee.

Other International
$15 shipping fee.

Our products are packaged in PE ziplock bags by default. Compared to boxed, this is a simpler packaging. Our original intention is to focus on the product itself, reduce packaging costs, thereby lowering the price, and is conducive to environmental protection. Our packages will use professional packaging to ensure that the toys are not damaged during the express delivery process

United States: duties are included in the shipping fee. Taxes are applied at check-out according to the state/province of the shipping address. Other international shipments: there may be duties and taxes incurred on your shipment that you will be responsible for. Please note that STEMTOYSBEST does not have any control over these fees and we cannot advise as to what the costs will be, as they vary by country. For more information, please contact your local customs office. Keep in mind that we’re not able to reimburse you for duties and taxes paid upon delivery.

Should you choose to refuse the delivery of your order to avoid duties and taxes or if you change your mind, you will be responsible for the return shipping fee charged to STEMTOYSBEST. Keep in mind that this amount is dependent on your country.

We can edit your order as long as it has not yet been processed or packaged. Keep in mind that orders may be processed earlier than expected on our website so we recommend that you let us know about any changes as soon as possible. We’re not able to add items to an existing order. If you’d like to add more items, place a new order and provide us with both order numbers; our team will merge them before shipping and reimburse any shipping fees, if eligible.

If your order has not yet shipped, email us at with the new address and order number and we can adjust it for you. If the order has already been processed and shipped, we’re not able to adjust the address for you but you can follow the instructions below for the appropriate courier!

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