Ronin Baseball Equipment Backpack - Bat Bros Bad Day
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Size chart
Find your fit. All measurements are in inches. If you're between sizes, size up for a relaxed fit.
Men's Tops (Tees)*
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Chest | 35 | 38 | 41 | 44 | 48 | 52 | 56 |
| Length | 28 | 29 | 30 | 31 | 32 | 33 | 34 |
Premium material allows for little to no shrink.
*For a true fit, go one size down for relaxed fit garments.
For true fit garments, go a size up for a relaxed fit.
Women's Tops
| Size | XS | S | M | L | XL | 2XL |
|---|---|---|---|---|---|---|
| Bust | 35.5 | 36 | 38 | 40 | 43 | 45.5 |
| Body Length | 25.5 | 27 | 28 | 29 | 30.5 | 30.5 |
| Sleeve Length | 7 | 7.5 | 8 | 8 | 9 | 9 |
Sleeve length applies to short-sleeve tees.
Youth Tops (Tees)
| Size | YS | YM | YL | YXL |
|---|---|---|---|---|
| Chest | 16 | 17 | 19 | 20 |
| Length | 22 | 23.5 | 25 | 26 |
Youth tees are true to size. Chest is measured flat, armpit to armpit.
Men's Shorts (Mesh)
| Size | S | M | L | XL | 2XL |
|---|---|---|---|---|---|
| Waist | 28–31 | 31–33 | 33–35 | 36–39 | 40–44 |
| Inseam | 6 | 6 | 6.5 | 7 | 7.5 |
Youth Shorts (Mesh)
| Size | YS | YM | YL | YXL |
|---|---|---|---|---|
| Waist | 22.5 | 24 | 26 | 28 |
| Outseam (w/ waistband) | 13.5 | 14 | 14.5 | 15 |
Men's Pants (Sweatpants & Joggers)
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Waist | 27 | 29 | 32 | 35 | 38 | 43 | 47 |
| Length | 38.5 | 39 | 40.5 | 41.5 | 43 | 43.5 | 44 |
| Inseam | 30 | 30.5 | 31 | 31.5 | 33 | 33.5 | 34 |
| Hips | 34 | 36 | 38 | 41 | 44 | 47 | 50.5 |
Youth Pants (Sweatpants)
| Size | YS | YM | YL | YXL |
|---|---|---|---|---|
| Waist | 21.5 | 23 | 24 | 25 |
| Inseam | 21.5 | 23.5 | 24 | 25 |
Fitted Caps
| Cap Size | 7 | 7⅛ | 7¼ | 7⅜ | 7½ | 7⅝ | 7¾ | 7⅞ | 8 |
|---|---|---|---|---|---|---|---|---|---|
| Head (in) | 22 | 22⅜ | 22¾ | 23⅛ | 23½ | 23⅞ | 24¼ | 24⅝ | 25 |
| Head (cm) | 55.8 | 56.8 | 57.7 | 58.7 | 59.6 | 60.6 | 61.5 | 62.5 | 63.5 |
Fitted caps follow standard 59FIFTY sizing. Between sizes? Size up.
Adult Snapback Caps
| Size | Fits Hat Sizes | Head (in) | Head (cm) |
|---|---|---|---|
| One Size | 7⅛ – 7¾ | 22⅜ – 24¼ | 56.8 – 61.5 |
Adjustable snap closure.
Youth Snapback Caps
| Size | Fits Hat Sizes | Head (in) | Head (cm) |
|---|---|---|---|
| One Size | 7 and smaller | 22 and smaller | 55.8 and smaller |
One size fits most youth heads. Adjustable snap closure.
How to Measure
- Chest
- Measure across the fullest part of your chest, armpit to armpit.
- Bust
- Measure around the fullest part of your bust, keeping the tape horizontal.
- Length (tops)
- Measure from the top of the shirt (base of the neckline) to the bottom.
- Sleeve length
- Measure from the top of the shoulder to the end of the sleeve.
- Waist
- Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
- Hips
- Measure around the fullest part of your hips, keeping the tape horizontal.
- Inseam
- Measure from the bottom of the crotch, down the inside of the leg, to the bottom of the leg opening.
- Outseam with waistband
- Measure from the top of the waistband to the bottom of the leg opening.
- Length (pants)
- Stand straight and run the tape along the side of your leg, from waist to ankle or floor.
- Head (caps)
- Wrap a flexible tape around your head about half an inch above your eyebrows and ears, snug but not tight, where the cap's sweatband sits. If you're between sizes, size up.
- Item in Stock
Baseballism x The Baseball Bat Bros
Ronin Backpack by Baseballism
Built for Ballplayers. Designed for Battle.
Forged for the relentless, the Ronin Backpack is the ultimate companion for players who fight every inning like it’s their last. Named after the masterless warriors of Japan, this pack stands on its own—literally and figuratively.
Built for Ballplayers. Designed for Battle.
Forged for the relentless, the Ronin Backpack is the ultimate companion for players who fight every inning like it’s their last. Named after the masterless warriors of Japan, this pack stands on its own—literally and figuratively.
- Waterproof Nylon Exterior – Keeps gear dry through rain, sweat, and grit.
- Structured Base – Engineered to stand upright on any surface; doubles as an on-field bucket.
- Cleat/Shoe Compartment – Isolates dirt and odor from your core loadout.
- 5 Utility Clips – Lock down helmets, gloves, pads—whatever you carry into battle.
- PVC Bag Tag + No Fear Patch – Durable ID and signature branding, built to take hits.
- Baseballism Carabiner – Hook it on the fence, keep it off the ground, game ready.
- Ergonomic Straps – Designed for long hauls to cages, dugouts, and back again.
- Suitcase Trolley Sleeve – Travel-equipped for road series or flight-ready weekends.
- Dedicated iPad/Laptop Sleeve – Protects your tech behind enemy lines.
-
Batting Glove & Accessory Pocket – Quick-access storage where you need it.
- Holds Up To Four Baseball Bats
The Ronin doesn’t just carry gear—it carries legacy. For the players who battle alone but play for something greater
