Creating hand-knitted garments for newborns is one of the most rewarding and thoughtful crafts you can undertake. Among the most practical and adorable items are knitted jogger pants, which offer both comfort and warmth for little ones. In this comprehensive tutorial, we will walk you through every step to knit a jogger-style trouser for a newborn baby boy (0–3 months old).
This guide is perfect for both confident beginners and experienced knitters who are looking to create a beautiful, functional garment with a cozy and modern look.
🧶 Why Knit Jogger Pants for Babies?
Jogger-style pants offer several benefits:
- Comfortable fit: Soft, stretchy waistband and cuffs for easy wear.
- Freedom of movement: A loose fit around the hips and legs allows diaper room and flexibility.
- Warmth: Perfect for cooler seasons or air-conditioned environments.
- Personal touch: Hand-knitting makes it unique, heirloom-worthy, and customizable.
🧵 Materials Needed
Before you begin, gather the following materials:
Yarn:
- Type: Baby-friendly, soft, and washable yarn (avoid scratchy or textured yarns)
- Fiber: Cotton, bamboo, or a soft merino wool blend
- Weight: DK (Double Knitting) or Light Worsted (category 3)
- Yardage: ~150–200 yards (140–180 meters)
Needles:
- Circular needles (3.5 mm and 4 mm / US 4 and US 6) OR straight needles if knitting flat
- Double-pointed needles (optional for cuffs and waist if in the round)
Notions:
- Tapestry needle
- Stitch markers
- Measuring tape
- Scissors
- Optional: Small elastic band or drawstring (for waistband)
📏 Sizing Information (0–3 Months)
The following measurements are standard for newborns aged 0–3 months:
| Measurement Area | Size (inches) | Size (cm) |
|---|---|---|
| Waist | 14–16″ | 35–40 cm |
| Hip | 16–18″ | 40–45 cm |
| Inseam | 6″ | 15 cm |
| Full length | 10–12″ | 25–30 cm |
| Leg opening | 3.5–4″ | 9–10 cm |
Note: Jogger pants are designed to be slightly roomy for comfort and accommodate diapers.
🧵 Construction Overview
We will knit the jogger pants bottom-up in the round for a seamless finish, but flat knitting instructions are also provided. The pants are constructed as follows:
- Legs (x2) – Knit both legs separately
- Join legs – Seamlessly join to form the crotch and rise
- Waistband – Add ribbing and optional drawstring
- Finishing touches – Weave in ends and block if needed
🧶 Pattern: Newborn Jogger Pants (0–3 Months)
Gauge:
22 stitches and 30 rows = 4×4” (10×10 cm) in stockinette stitch using 4 mm needles
Check your gauge! It’s crucial for sizing.
Step 1: Knit the Legs (Make 2)
With 3.5 mm needles:
- Cast on 36 stitches (for each leg)
- Join in the round (or knit flat and seam later), place stitch marker at the beginning of the round.
Work 2×2 ribbing (K2, P2) for 1 inch (2.5 cm) – this forms the cuff.
Switch to 4 mm needles.
Continue in stockinette stitch (knit all rounds) for approx. 6 inches (15 cm), or desired leg length.
Optional: Add a few increases (e.g., K6, M1) every few inches for a roomier leg.
Finish both legs and do not bind off.
Step 2: Join the Legs
With both legs on the needles:
- Place both legs on one circular needle, aligning the stitches to face the same direction.
- You should now have 72 stitches in total (36 + 36).
- Add stitch markers to denote the inner leg joins and center front/back.
Work across all stitches in the round for the body section (the rise).
Knit in stockinette for 3 inches (7.5 cm), or desired rise length.
Optional: For a better fit, add a few short rows at the back.
Step 3: Create the Waistband
Switch to 3.5 mm needles.
Work in K2, P2 ribbing for 1–1.5 inches (2.5–4 cm), depending on preference.
Optional waistband options:
- Fold-over waistband: Knit 2 inches of ribbing, fold over and sew down, leaving a small opening to insert elastic.
- Drawstring waistband: Make a small eyelet (YO, K2tog) at the front center and thread in an i-cord or ribbon.
Step 4: Bind Off & Finish
- Bind off loosely in pattern (ribbing).
- Weave in all ends using a tapestry needle.
- If knitted flat, seam the legs and inner crotch using mattress stitch.
Optional Finishing:
- Lightly block the pants for a smoother shape.
- Add custom embroidery or a small patch.
🎨 Customization Ideas
- Color-blocked legs
- Striped pattern using leftover yarn
- Animal ears or face on the bum area
- Tiny side pockets (non-functional, decorative)
🧼 Care Instructions
Always label the pants with care instructions if gifting.
- Machine washable yarns only
- Wash cold or gentle cycle
- Lay flat to dry
- Do not bleach or iron
👶 Tips for Success
- Always check your gauge before knitting the full pattern.
- Use soft, hypoallergenic yarn for newborns.
- Avoid embellishments like buttons or beads that can pose choking hazards.
- If gifting, pair it with a matching hat or booties for a full handmade set!
🧵 Conclusion
Hand-knitting a pair of jogger-style trousers for a newborn baby boy is not only a satisfying project but also a heartfelt gift that can become a cherished keepsake. This detailed tutorial provides everything you need to make a practical yet stylish garment that ensures comfort and warmth for the baby.
Whether you’re crafting for your own child, a friend’s newborn, or a charity donation, this little project carries warmth in every stitch. Take your time, enjoy the process, and don’t forget to personalize it to make it uniquely yours.
Video tutorial:
