420ml Kids Math Game Stainless Steel Water Bottle OEM

A 420 mL capacity, 8 × 23.6 × 7.9 cm body, and approximately 420 g net weight define the main product specification. The bottle uses 304 stainless steel and combines a rotating silicone number sleeve, carry handle, spout lid, and adjustable shoulder strap in a colorful child-oriented format.

Buyers comparing stainless steel water bottles for kids should review the complete assembly rather than material alone. Sleeve rotation, lid operation, strap attachment, product weight, artwork durability, accessible parts, and packaging all affect suitability for the intended age group and sales channel.

The rotating silicone sleeve gives the bottle a recognizable feature beyond ordinary printed decoration. Numbered rings can be turned by hand, allowing children to explore number sequences and simple combinations during supervised use. The feature should be presented as interactive number play rather than a guaranteed educational result.

• Confirm the number sequence and printed symbols before sample production.
• Check whether each ring rotates smoothly without becoming excessively loose.
• Verify that numbers remain aligned and readable after repeated rotation.
• Inspect the silicone sleeve for tears, deformation, or unexpected separation.
• Confirm that the rotating parts do not create accessible sharp edges or pinch points.
• Review the sleeve colors against the approved Pantone references.
• Check whether the sleeve can be removed and whether removal requires an age warning.

Numbered water bottles can support school, kindergarten, family activity, educational gift, and children's retail programs when the interactive feature is appropriate for the intended age group. Buyers should provide the required number layout, symbol style, language, colors, and any warning text before approving the artwork.

A spout lid supports quick drinking, while the top handle and adjustable shoulder strap provide two carrying methods. The combination is relevant for school routes, playground visits, picnics, family travel, and outdoor activities where children may alternate between carrying the bottle by hand, over the shoulder, or inside a backpack.

• Check how the spout opens, closes, and returns to the sealed position.
• Confirm lid fitting after repeated opening and closing.
• Test the bottle under the agreed leakage procedure.
• Inspect the carry handle after repeated lifting.
• Confirm the adjustable strap range against the intended age group.
• Check the strap hooks, stitching, and attachment points under pulling force.
• Review whether removable lid parts require special cleaning instructions.
• Confirm whether any small detachable part needs an age warning.

Leakproof performance, strap strength, and child suitability should be based on approved test conditions rather than wording copied from a generic kids bottle template. Additional children's bottle formats can be reviewed in the Kid Cup collection.

Children's brands, school suppliers, educational gift buyers, and retailers can coordinate the body color, silicone sleeve colors, number layout, character theme, logo, strap style, color box, label, and carton marks. Design boundaries should be established before sampling because custom molds, complex number layouts, color matching, printing, and packaging may affect the unit price and production schedule.

• Buyer-specified bottle and lid colors
• Custom silicone sleeve colors
• Numbers, symbols, and approved educational artwork
• Character themes and surface graphics
• Printed logo or another approved decoration method
• Custom strap color and strap style
• Retail color box, gift box, insert card, or instruction sheet
• Barcode label, warning label, product label, and carton mark
• Private-label packaging for school, gift, and retail channels

MOQ starts at 300 pieces. Buyers planning custom water bottles in bulk should provide vector artwork, number layouts, Pantone references, logo dimensions, strap requirements, target age group, packaging files, and destination market before requesting the final quotation.

Review the available customized drinkware services before preparing the RFQ. Initial graphics can also be organized through the online customization page.

Sample approval should establish the reference for material, capacity, dimensions, weight, lid operation, sleeve rotation, strap attachment, surface finish, artwork, packaging, and labeling. The rotating number rings require additional checks because alignment, rotation force, printing durability, and part retention must remain consistent during normal handling.

• Confirm the 304 stainless steel specification and available material documents.
• Measure the 420 mL capacity and 8 × 23.6 × 7.9 cm dimensions.
• Check the approximate 420 g product net weight.
• Operate the spout lid repeatedly and test it under the agreed leakage procedure.
• Rotate every numbered ring and check alignment, resistance, and retention.
• Inspect the silicone sleeve for tearing, deformation, and color variation.
• Check the carry handle, strap hooks, stitching, and attachment points.
• Inspect accessible edges and removable components.
• Review logo position, number layout, character artwork, and color matching.
• Approve the color box, labels, warnings, barcode, and carton marks.
• Keep signed specifications and clear sample photos for bulk comparison.

BPA-free, insulation-time, dishwasher-safe, leakproof, and educational-performance claims should not be published until the corresponding material, test, or usage information is available.

Buyers can review the listed quality-control process before preparing the sample and pre-shipment inspection checklist.

Accurate quotations require the order quantity, intended age group, bottle colors, number layout, character artwork, logo, strap specification, packaging format, labels, destination, and testing requirements. Packing data should be confirmed from an approved sample because color boxes, gift boxes, inserts, and warning labels can change carton quantity, carton dimensions, gross weight, and freight cost.

• Required quantity, starting from the 300-piece MOQ
• Target age group and sales channel
• Required bottle, lid, sleeve, and strap colors
• Number sequence, symbol layout, and character artwork
• Logo file, dimensions, placement, and decoration method
• Required spout lid and strap configuration
• Color box, gift box, insert card, and instruction-sheet requirements
• Barcode, warning label, product label, and carton-mark requirements
• Target country and required food-contact or children's product documents
• Delivery destination and requested completion date

A custom water bottle manufacturer should provide an itemized quotation separating the bottle, lid, silicone sleeve, strap, artwork, packaging, testing, sample, and shipping costs. Such separation makes supplier and customization comparisons more reliable.

General ordering information is available in the FAQs, while company information is available on the About BlueGreen Drinkware page. Send the artwork, number layout, quantity, packaging requirements, and target-market documents to request a sample plan and itemized quotation.