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Transformers Boy's Converting Optimus Prime Costume

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Item # DI104939
Items Included
  • Jumpsuit
  • Truck Cab
  • Pair of Wrist Cuffs With Attached Tires
  • Pair of Gloves
  • Pair of Boot Covers With Attached Tires
  • Mask
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Product Information

Size Chart
Runs Small
Slightly Small
True To Size
Slightly Large
Runs Large
Size Measurement Standard Metric
3T/4T Chest 23" 58cm
3T/4T Sleeve Length 16" 41cm
3T/4T Torso 23" 58cm
3T/4T Inseam 17" 43cm
Size Measurement Standard Metric
Size 4/6 Chest 28" 71cm
Size 4/6 Sleeve Length 17" 43cm
Size 4/6 Torso 24" 61cm
Size 4/6 Inseam 19" 48cm
Size Measurement Standard Metric
Size 7/8 Chest 30" 76cm
Size 7/8 Sleeve Length 19 1/2" 50cm
Size 7/8 Torso 25" 64cm
Size 7/8 Inseam 21" 53cm
Size Measurement Standard Metric
Size 10/12 Chest 33" 84cm
Size 10/12 Sleeve Length 22 1/2" 57cm
Size 10/12 Torso 28" 71cm
Size 10/12 Inseam 26" 66cm
  • Fabric: 100% polyester; mesh: 86% polyester, 14% spandex; foam: 100% polyurethane
  • Jersey knit jumpsuit has hook and loop fastener at center back
  • All over printed graphics
  • Foam wrist cuffs slide on, have elastic band in upper edge
  • Wrist length gloves slide on
  • Foam boot covers have elastic band in upper edge
  • Molded plastic mask has elastic band around back of head, mesh covered eye openings for limited vision
  • Foam truck cab has mesh covered windshield for truck mode, head hole in top for robot mode
  • Illustrated transformation instructions are printed on item package
  • Officially licensed

Prime Time

Kids dream about being their heroes all the time. Optimus Prime is one of the greats! He's the cool and collected leader of the Autobots who always has a plan to save the day. He's also the main robot who stands between Earth and Megatron's evil plans. Also, the way he converts into a giant semi-truck to disguise himself in plain sight? Totally awesome!

It's no wonder tons of kids dream about being Optimus Prime, but what if there was an amazing way to jumpstart your child's imagination? What if there was a way to turn your child into the famous Transformer from the series? Now, with this Transformers Converting Optimus Prime Costume for kids, your child can finally have that chance! It's officially licensed from Transformers and it comes with everything your little one needs!

Product Details

This converting costume is a realistic look that young fans will love to wear! It comes with a suit that has plenty of printed details on the exterior, including a windshield, grill, and more. It also comes with a set of foam armor pieces that add a realistic touch. The sleeve and leg pieces have attached foam tires on them, giving your child a freshly transformed look. The chest piece fits over your child's body and has a place on top for the head.

The molded mask fits on your child's face to bring the whole look together. Of course, that's not even the best part! The best part about this costume is that your child can convert from full-robot Optimus Prime to semi-truck Optimus just by laying down and pulling the top flap down! Your child will feel like a real Transformer!

Robots in Disguise

If your child wants to lead the Autobots, then this Transformers costume is an easy choice. Be sure to check out the rest of our Transformers costumes to assemble your own team of Robots in Disguise!

Questions & Answers

Q: Does this come in adult sizes????? (1 Answer)
Asked by David | August 2, 2022
Monster Responds...
Of course grown ups want to be able to transform, too! You can find the adult Optimus Prime converting costume under item number DI104939.


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