Size band	Slot & plug spec	Capacity & base	Best for
3.5-4.5 inch mini (90-115 mm)	Slot 3.5 mm tall by 22-25 mm wide; press-fit TPE stopper	200-400 g of mixed coin; molded base with 15-20 g ballast	Party favors, blind-box style drops, till-side impulse gifts
6-8 inch classic desk (150-205 mm)	Slot 4 mm tall by 25-28 mm wide; press-fit stopper or quarter-turn bayonet plug	1.2-2.0 kg; base footprint at 55 percent of height plus 30-50 g ballast ring	The category standard — a child's first bank, gift retail, stationery brands
9-12 inch large shelf (230-305 mm)	Slot 4.5 mm tall by 28-32 mm wide; bayonet or threaded plug with coin-turn key	2.5-4.0 kg; cast-in ballast ring and ABS or polypropylene ear rod cores	Premium gift, character retail hero SKU, collector crossover editions
14-18 inch jumbo display (355-460 mm)	Slot 4.5 mm tall by 32 mm wide; threaded plug with coin-turn key or keyed lock plate	6-10 kg; two-part body with internal baffle and plinth-style base	Bank branch counters, retail loyalty displays, charity donation banks, lobby pieces

Material route	Hand feel & weight	Best for	Detail ceiling	MOQ	Unit band (USD)
⭐ Hollow rotocast soft vinyl (recommended · page standard material)	Soft, warm, matte to semi-gloss; light for its size because the body is empty	Any real working bank: children's savings gifts, designer shelf banks, promotional programs	High on rounded kawaii forms — the rotocast skin takes a crisp ear fold, molded collar and pad-printed face	100 pcs	$2.60-12.00
Clear or frosted transparent rotocast vinyl	Same softness with a glassy or hazy surface; interior fully visible	Children's savings banks where seeing the coins is the motivation; frosted reads more premium than crystal	High on silhouette, unforgiving on interior — flow marks, overspray and coin scuffs all show	300 pcs	$4.20-16.00
Injection PVC as two bonded half-shells	Harder, glossier, heavier; a visible parting seam around the body	Cost-driven promotional banks where the seam falls on a molded design line	Very high — sharpest molded detail and the tightest slot collar of any route	1,000 pcs	$1.80-6.50
ABS or PP rigid economy shell	Thin, hard, hollow-sounding; the cheapest bank on a shelf	Very high volume giveaways with a short promotional life	Low — thick sections, molded graphics, two or three paint colors	1,000 pcs	$1.20-3.00
Cold-cast polyresin	Heavy, dense, cool to the touch; a stone-like collectible bank	Adult collector editions, gallery-style designer banks, jumbo premium pieces	Highest of any route — fine undercuts, crisp fur lines and engraved detail	200 pcs	$9.00-32.00
Slip-cast ceramic (the traditional piggy bank)	Heavy and brittle, glazed surface; the bank most adults grew up with	Nostalgic gift lines and souvenir markets where breakability is accepted	High on smooth glazed forms, but fragile edges and no soft-touch or translucent option	500 pcs	$2.50-9.00

Process step	What we do	Result on the shelf	When to choose
Character design & kawaii proportion sheet	Front, side and back layouts fixing head-to-body ratio, ear length and spread, eye size, blush position and colorway, with the slot and plug locations drawn in from the first sketch	The piece reads as a designed character, not a mascot by committee — and the slot does not land on the face	Every project; the slot position must be decided before sculpting
Bank function engineering	Slot dimensions and collar geometry, internal chute angle, plug seat and thread or bayonet design, expected fill mass and base footprint, ballast mass and ear core specification	A bank that opens easily, holds its fill and stays standing — the part buyers never notice until it fails	All working banks; non-negotiable above 6 inch, where fill mass becomes significant
3D sculpt with rotocast wall-thickness model	ZBrush sculpt with every surface modeled at a castable wall thickness — 3-4 mm on ears, 4-5 mm on the base, 2.5-3 mm on the body — plus armature bosses for the ear cores	No slumped ears, no thin translucent patches, no weak base that creeps under coin load	Every rotocast project; wall thickness is the difference between a bank and a toy that splits
Mold making & rotational casting	Aluminum or steel cavities cut, parting lines placed off the face, then a measured vinyl charge rotated and fused inside the heated mold	A seamless hollow body with consistent weight piece to piece and a clean parting line	All soft vinyl quantities from 100 pieces upward
Slot cutting, collar fitting & plug seat machining	Slot punched or routed in a molded collar with a 1.5-2 mm rolled lip; on large banks an ABS insert collar is bonded in; the plug seat is faced flat so the plug seals against a true surface	A slot that takes coins smoothly for years instead of tearing a split down the back	Every bank; the slot edge is the single most stressed feature in the product
Face pad print, airbrush blush & body color	Body color Pantone-matched, face pad-printed in 4-6 colors with a gloss dot on each eye, blush airbrushed for a soft edge, then a clear varnish over the face graphics	A face with kawaii depth rather than flat printed circles, and an expression that survives handling	All cute character programs; blush is what makes a bunny read as kawaii
Ballast, plug assembly, capacity & tilt testing	Ballast ring cast or bonded into the base, plug fitted and cycled 1,000 times, sample tilted to 15 degrees and required to self-right, then filled to rated capacity and inspected for deformation	The bank stays upright when empty, does not split when full, and the plug still seats after a year	All 6 inch and larger banks; essential for the jumbo and locked versions
Packaging & QC	Ear cradle in paper or molded pulp, body wrapped, spare plug and opening instructions included, QC on slot burrs, paint registration, plug torque and ballast presence	Arrives whole, with straight ears and a working plug — the two failures competitors ship most often	Every order; the ear cradle matters most on 9 inch and larger pieces

Tier	Typical program	MOQ	What you get
Pilot / proof of concept	First bank for a new character, a concept test or a single-shop launch	100 pcs	Full painted prototype first (7 working days), single sculpt, one colorway, one plug type, window color box. Prototype-only orders are also accepted if you want to drop coins through it before committing to a run.
Limited kawaii drop	Designer toy release, convention exclusive, seasonal pastel range, numbered edition	300 pcs	Sculpt plus several colorways inside one tooling investment, frosted translucent body option, numbered base plaque, premium gift box with ear cradle.
Brand / retail program	Stationery or gift brand range, bank savings campaign, licensed character line	1,000 pcs	Multi-SKU tooling package, Pantone color control, captive plug for children's markets, barcode and retail label compliance, bulk unit pricing that unlocks the volume discount band.
Flagship / campaign program	Multi-colorway assortment, bank branch rollout, charity donation bank program, jumbo display pieces	3,000 pcs+	Shared tooling across the assortment, lock plate or jumbo two-part body, display coordination, free freight planning, dedicated QC inspector, scheduled re-order slots held for the season.

Kawaii Bunny Designer Vinyl Coin Bank

What Is a Kawaii Bunny Designer Vinyl Coin Bank?

Product Display

Coin bank size bands and their bank specifications

Material Comparison — Why Hollow Rotocast Vinyl Wins for a Coin Bank

Process Comparison — How a Functional Vinyl Coin Bank Is Actually Built

MOQ — Real Coin Bank Programs From 100 Pieces

Production Process & Timeline

FAQ