This is an authentic ninja uniform that is built to last. It's not made of cheap costume material.

If you've ever imagined slipping into the shadows like a true shinobi but wanted to add a unique twist of color, our Blue Ninja Uniform is exactly what you've been looking for. Most people picture ninjas wearing black, but in reality, stealth isn't always about darkness. It's about blending in with your surroundings. A blue ninja uniform makes sense when you're near water, moving under a moonlit sky, or anywhere that dark blue tones help you disappear. That's part of what makes this outfit so fun and so different. It's grounded in real martial arts tradition while also standing out as a one-of-a-kind look.

This isn't some cheap one-piece costume that falls apart after one night of wearing it. This is a real ninja gi, patterned after the same designs that martial artists have been using for centuries. That means you can wear it for training in the dojo, roleplay, stage performances, or just as a striking blue ninja costume for Halloween or cosplay events. Unlike novelty outfits, the cut, material, and stitching are built to handle movement, sparring, and repeated use. So whether you're practicing martial arts techniques, showing off your best ninja poses at a party, or even filming your own ninja video, this blue ninja outfit holds up in both style and durability.

Ninja uniforms, or shinobi shozoku, were historically practical in design. They weren't just about looking mysterious, but were designed to give the wearer freedom of movement and the ability to hide gear. Our blue ninja gi follows that same spirit with its multi-piece setup. You get the jacket, pants, arm gauntlets, mask, and hood, all designed so you can fully immerse yourself in the ninja persona. The jacket comes with inner ties to keep everything secure, and there's even a hidden pocket that works perfectly for small accessories like throwing stars. The pants use traditional waist and leg ties for a flexible fit, so you can move, kick, crouch, or sprint without restriction.

What sets this particular ninja uniform apart is the color. Blue isn't the first thing most people think of when they imagine ninjas, but that's exactly why it's so appealing. A blue ninja Halloween costume is guaranteed to catch attention while still keeping that stealthy, martial arts look. At a party, you'll stand out among the sea of black-clad ninjas. On stage, the bright yet dark tone pops under the lights. And if you're the type of person who likes to go all-in on authenticity, you can imagine yourself as a shinobi infiltrating ships under a night sky or slipping past guards along a moonlit riverbank. It's a nod to both creativity and history, which makes it a conversation starter as well as a practical uniform.

The material blend is another reason this uniform feels different from the usual store-bought ninja costume. Made from a 55% cotton and 45% polyester mid-weight fabric, it has that sweet spot of comfort and toughness. The cotton keeps it breathable and soft against the skin, while the polyester adds strength and helps it resist wear and tear. You won't feel like you're wrapped in flimsy fabric that rips at the first stretch. Instead, you get a martial arts-ready uniform that can survive everything from training drills to a long night of Halloween fun.

The blue ninja gi also makes a great base for accessorizing. Add a pair of tabi boots for that classic Japanese look, pick up some training weapons like foam nunchucks or wooden swords, or carry a few costume shuriken to complete the vibe. That's one of the best parts of having a true multi-piece gi instead of a one-piece costume. You can mix and match extras to create a look that's all your own. Whether you want a lean, minimalist ninja aesthetic or a fully decked-out warrior appearance, this outfit gives you the flexibility to do both.

If you're a martial arts fan, you'll appreciate how this uniform connects to real ninjutsu practice. Historically, ninjas weren't always the black-suited figures we see in movies. Their clothing was adapted to their environment. Sometimes that meant darker colors at night, other times earth tones for blending into forests, or even disguises as farmers or workers. Blue dye was common in Japan, often used in clothing that doubled as everyday wear and work attire. A blue ninja outfit could easily be imagined as a clever shinobi disguise, letting you look ordinary by day and vanish into the twilight by night.

Of course, if you're mainly picking this up as a blue ninja Halloween costume, you don't have to worry about historical accuracy. You just get to enjoy the look and the reactions. Kids, teens, and adults alike love the novelty of a colored ninja gi, and blue happens to be one of the most versatile shades. It's bold without being flashy, stealthy without being too predictable, and instantly recognizable as "ninja" to anyone who sees it. You'll get the respect of martial arts fans and the admiration of partygoers all at once.

The Blue Ninja Uniform is a solid choice for martial artists, cosplayers, and anyone who just loves the idea of stepping into the role of a shinobi. It's durable enough for practice, authentic enough for demonstrations, and fun enough to use as a costume. No matter how you wear it, it gives you that unique edge that sets you apart from every other ninja in the room.

Blue Ninja Uniform Highlights

• Authentic blue ninja uniform design, not just a novelty costume
• Includes jacket, pants, arm gauntlets, mask, and hood
• Made from a durable 55% cotton / 45% polyester blend
• Jacket features secure inner ties and a hidden shuriken pocket
• Pants include traditional waist and leg ties for a flexible fit
• Perfect for martial arts training, cosplay, parties, or a blue ninja Halloween costume
• Great base for accessorizing with ninja weapons or tabi boots
• Unique blue ninja outfit stands out while still looking authentic

Any defective costumes purchased between September 1st and October 30th must be returned before Halloween in order to receive a refund. After October 30, costumes purchased between these dates may only be returned for exchange of the same item.

---

• We Ship Fast! Most orders ship within the same day (excluding weekends & holidays).
• Free Shipping on Orders Over $35
• $6.95 Flat-Rate Shipping on Orders Under $35
• California Consumers:
   WARNING: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• Questions? Email Service@KarateMart.com